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Posted to commits@celix.apache.org by ab...@apache.org on 2013/10/01 14:47:43 UTC
svn commit: r1528071 [2/3] - in /incubator/celix/trunk: cmake/ doap/
examples/ examples/mongoose/private/include/ examples/mongoose/private/src/
examples/osgi-in-action/chapter04-correct-lookup/private/src/ framework/
framework/public/include/ utils/
Modified: incubator/celix/trunk/examples/mongoose/private/src/mongoose.c
URL: http://svn.apache.org/viewvc/incubator/celix/trunk/examples/mongoose/private/src/mongoose.c?rev=1528071&r1=1528070&r2=1528071&view=diff
==============================================================================
--- incubator/celix/trunk/examples/mongoose/private/src/mongoose.c (original)
+++ incubator/celix/trunk/examples/mongoose/private/src/mongoose.c Tue Oct 1 12:47:43 2013
@@ -1,4066 +1,4066 @@
-// Copyright (c) 2004-2010 Sergey Lyubka
-//
-// Permission is hereby granted, free of charge, to any person obtaining a copy
-// of this software and associated documentation files (the "Software"), to deal
-// in the Software without restriction, including without limitation the rights
-// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-// copies of the Software, and to permit persons to whom the Software is
-// furnished to do so, subject to the following conditions:
-//
-// The above copyright notice and this permission notice shall be included in
-// all copies or substantial portions of the Software.
-//
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-// THE SOFTWARE.
-
-#if defined(_WIN32)
-#define _CRT_SECURE_NO_WARNINGS // Disable deprecation warning in VS2005
-#else
-#define _XOPEN_SOURCE 600 // For flockfile() on Linux
-#define _LARGEFILE_SOURCE // Enable 64-bit file offsets
-#endif
-
-#ifndef _WIN32_WCE // Some ANSI #includes are not available on Windows CE
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <errno.h>
-#include <signal.h>
-#include <fcntl.h>
-#endif // !_WIN32_WCE
-
-#include <time.h>
-#include <stdlib.h>
-#include <stdarg.h>
-#include <assert.h>
-#include <string.h>
-#include <ctype.h>
-#include <limits.h>
-#include <stddef.h>
-#include <stdio.h>
-
-#if defined(_WIN32) // Windows specific #includes and #defines
-#define _WIN32_WINNT 0x0400 // To make it link in VS2005
-#include <windows.h>
-
-#ifndef PATH_MAX
-#define PATH_MAX MAX_PATH
-#endif
-
-#ifndef _WIN32_WCE
-#include <process.h>
-#include <direct.h>
-#include <io.h>
-#else // _WIN32_WCE
-#include <winsock2.h>
-#define NO_CGI // WinCE has no pipes
-
-typedef long off_t;
-#define BUFSIZ 4096
-
-#define errno GetLastError()
-#define strerror(x) _ultoa(x, (char *) _alloca(sizeof(x) *3 ), 10)
-#endif // _WIN32_WCE
-
-#define MAKEUQUAD(lo, hi) ((uint64_t)(((uint32_t)(lo)) | \
- ((uint64_t)((uint32_t)(hi))) << 32))
-#define RATE_DIFF 10000000 // 100 nsecs
-#define EPOCH_DIFF MAKEUQUAD(0xd53e8000, 0x019db1de)
-#define SYS2UNIX_TIME(lo, hi) \
- (time_t) ((MAKEUQUAD((lo), (hi)) - EPOCH_DIFF) / RATE_DIFF)
-
-// Visual Studio 6 does not know __func__ or __FUNCTION__
-// The rest of MS compilers use __FUNCTION__, not C99 __func__
-// Also use _strtoui64 on modern M$ compilers
-#if defined(_MSC_VER) && _MSC_VER < 1300
-#define STRX(x) #x
-#define STR(x) STRX(x)
-#define __func__ "line " STR(__LINE__)
-#define strtoull(x, y, z) strtoul(x, y, z)
-#define strtoll(x, y, z) strtol(x, y, z)
-#else
-#define __func__ __FUNCTION__
-#define strtoull(x, y, z) _strtoui64(x, y, z)
-#define strtoll(x, y, z) _strtoi64(x, y, z)
-#endif // _MSC_VER
-
-#define ERRNO GetLastError()
-#define NO_SOCKLEN_T
-#define SSL_LIB "ssleay32.dll"
-#define CRYPTO_LIB "libeay32.dll"
-#define DIRSEP '\\'
-#define IS_DIRSEP_CHAR(c) ((c) == '/' || (c) == '\\')
-#define O_NONBLOCK 0
-#if !defined(EWOULDBLOCK)
-#define EWOULDBLOCK WSAEWOULDBLOCK
-#endif // !EWOULDBLOCK
-#define _POSIX_
-#define INT64_FMT "I64d"
-
-#define WINCDECL __cdecl
-#define SHUT_WR 1
-#define snprintf _snprintf
-#define vsnprintf _vsnprintf
-#define sleep(x) Sleep((x) * 1000)
-
-#define pipe(x) _pipe(x, BUFSIZ, _O_BINARY)
-#define popen(x, y) _popen(x, y)
-#define pclose(x) _pclose(x)
-#define close(x) _close(x)
-#define dlsym(x,y) GetProcAddress((HINSTANCE) (x), (y))
-#define RTLD_LAZY 0
-#define fseeko(x, y, z) fseek((x), (y), (z))
-#define fdopen(x, y) _fdopen((x), (y))
-#define write(x, y, z) _write((x), (y), (unsigned) z)
-#define read(x, y, z) _read((x), (y), (unsigned) z)
-#define flockfile(x) (void) 0
-#define funlockfile(x) (void) 0
-
-#if !defined(fileno)
-#define fileno(x) _fileno(x)
-#endif // !fileno MINGW #defines fileno
-
-typedef HANDLE pthread_mutex_t;
-typedef struct {HANDLE signal, broadcast;} pthread_cond_t;
-typedef DWORD pthread_t;
-#define pid_t HANDLE // MINGW typedefs pid_t to int. Using #define here.
-
-struct timespec {
- long tv_nsec;
- long tv_sec;
-};
-
-static int pthread_mutex_lock(pthread_mutex_t *);
-static int pthread_mutex_unlock(pthread_mutex_t *);
-static FILE *mg_fopen(const char *path, const char *mode);
-
-#if defined(HAVE_STDINT)
-#include <stdint.h>
-#else
-typedef unsigned int uint32_t;
-typedef unsigned short uint16_t;
-typedef unsigned __int64 uint64_t;
-typedef __int64 int64_t;
-#define INT64_MAX 9223372036854775807
-#endif // HAVE_STDINT
-
-// POSIX dirent interface
-struct dirent {
- char d_name[PATH_MAX];
-};
-
-typedef struct DIR {
- HANDLE handle;
- WIN32_FIND_DATAW info;
- struct dirent result;
-} DIR;
-
-#else // UNIX specific
-#include <sys/wait.h>
-#include <sys/socket.h>
-#include <sys/select.h>
-#include <sys/mman.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-#include <sys/time.h>
-#include <stdint.h>
-#include <inttypes.h>
-#include <netdb.h>
-
-#include <pwd.h>
-#include <unistd.h>
-#include <dirent.h>
-#include <dlfcn.h>
-#include <pthread.h>
-#if defined(__MACH__)
-#define SSL_LIB "libssl.dylib"
-#define CRYPTO_LIB "libcrypto.dylib"
-#else
-#define SSL_LIB "libssl.so"
-#define CRYPTO_LIB "libcrypto.so"
-#endif
-#define DIRSEP '/'
-#define IS_DIRSEP_CHAR(c) ((c) == '/')
-#define O_BINARY 0
-#define closesocket(a) close(a)
-#define mg_fopen(x, y) fopen(x, y)
-#define mg_mkdir(x, y) mkdir(x, y)
-#define mg_remove(x) remove(x)
-#define mg_rename(x, y) rename(x, y)
-#define ERRNO errno
-#define INVALID_SOCKET (-1)
-#define INT64_FMT PRId64
-typedef int SOCKET;
-#define WINCDECL
-
-#endif // End of Windows and UNIX specific includes
-
-#include "mongoose.h"
-
-#define MONGOOSE_VERSION "2.11"
-#define PASSWORDS_FILE_NAME ".htpasswd"
-#define CGI_ENVIRONMENT_SIZE 4096
-#define MAX_CGI_ENVIR_VARS 64
-#define ARRAY_SIZE(array) (sizeof(array) / sizeof(array[0]))
-
-#if defined(DEBUG)
-#define DEBUG_TRACE(x) do { \
- flockfile(stdout); \
- printf("*** %lu.%p.%s.%d: ", \
- (unsigned long) time(NULL), (void *) pthread_self(), \
- __func__, __LINE__); \
- printf x; \
- putchar('\n'); \
- fflush(stdout); \
- funlockfile(stdout); \
-} while (0)
-#else
-#define DEBUG_TRACE(x)
-#endif // DEBUG
-
-// Darwin prior to 7.0 and Win32 do not have socklen_t
-#ifdef NO_SOCKLEN_T
-typedef int socklen_t;
-#endif // NO_SOCKLEN_T
-
-typedef void * (*mg_thread_func_pt)(void *);
-
-static const char *http_500_error = "Internal Server Error";
-
-// Snatched from OpenSSL includes. I put the prototypes here to be independent
-// from the OpenSSL source installation. Having this, mongoose + SSL can be
-// built on any system with binary SSL libraries installed.
-typedef struct ssl_st SSL;
-typedef struct ssl_method_st SSL_METHOD;
-typedef struct ssl_ctx_st SSL_CTX;
-
-#define SSL_ERROR_WANT_READ 2
-#define SSL_ERROR_WANT_WRITE 3
-#define SSL_FILETYPE_PEM 1
-#define CRYPTO_LOCK 1
-
-#if defined(NO_SSL_DL)
-extern void SSL_free(SSL *);
-extern int SSL_accept(SSL *);
-extern int SSL_connect(SSL *);
-extern int SSL_read(SSL *, void *, int);
-extern int SSL_write(SSL *, const void *, int);
-extern int SSL_get_error(const SSL *, int);
-extern int SSL_set_fd(SSL *, int);
-extern SSL *SSL_new(SSL_CTX *);
-extern SSL_CTX *SSL_CTX_new(SSL_METHOD *);
-extern SSL_METHOD *SSLv23_server_method(void);
-extern int SSL_library_init(void);
-extern void SSL_load_error_strings(void);
-extern int SSL_CTX_use_PrivateKey_file(SSL_CTX *, const char *, int);
-extern int SSL_CTX_use_certificate_file(SSL_CTX *, const char *, int);
-extern int SSL_CTX_use_certificate_chain_file(SSL_CTX *, const char *);
-extern void SSL_CTX_set_default_passwd_cb(SSL_CTX *, mg_callback_pt);
-extern void SSL_CTX_free(SSL_CTX *);
-extern unsigned long ERR_get_error(void);
-extern char *ERR_error_string(unsigned long, char *);
-extern int CRYPTO_num_locks(void);
-extern void CRYPTO_set_locking_callback(void (*)(int, int, const char *, int));
-extern void CRYPTO_set_id_callback(unsigned long (*)(void));
-#else
-// Dynamically loaded SSL functionality
-struct ssl_func {
- const char *name; // SSL function name
- void (*ptr)(void); // Function pointer
-};
-
-#define SSL_free (* (void (*)(SSL *)) ssl_sw[0].ptr)
-#define SSL_accept (* (int (*)(SSL *)) ssl_sw[1].ptr)
-#define SSL_connect (* (int (*)(SSL *)) ssl_sw[2].ptr)
-#define SSL_read (* (int (*)(SSL *, void *, int)) ssl_sw[3].ptr)
-#define SSL_write (* (int (*)(SSL *, const void *,int)) ssl_sw[4].ptr)
-#define SSL_get_error (* (int (*)(SSL *, int)) ssl_sw[5])
-#define SSL_set_fd (* (int (*)(SSL *, SOCKET)) ssl_sw[6].ptr)
-#define SSL_new (* (SSL * (*)(SSL_CTX *)) ssl_sw[7].ptr)
-#define SSL_CTX_new (* (SSL_CTX * (*)(SSL_METHOD *)) ssl_sw[8].ptr)
-#define SSLv23_server_method (* (SSL_METHOD * (*)(void)) ssl_sw[9].ptr)
-#define SSL_library_init (* (int (*)(void)) ssl_sw[10].ptr)
-#define SSL_CTX_use_PrivateKey_file (* (int (*)(SSL_CTX *, \
- const char *, int)) ssl_sw[11].ptr)
-#define SSL_CTX_use_certificate_file (* (int (*)(SSL_CTX *, \
- const char *, int)) ssl_sw[12].ptr)
-#define SSL_CTX_set_default_passwd_cb \
- (* (void (*)(SSL_CTX *, mg_callback_pt)) ssl_sw[13].ptr)
-#define SSL_CTX_free (* (void (*)(SSL_CTX *)) ssl_sw[14].ptr)
-#define SSL_load_error_strings (* (void (*)(void)) ssl_sw[15].ptr)
-#define SSL_CTX_use_certificate_chain_file \
- (* (int (*)(SSL_CTX *, const char *)) ssl_sw[16].ptr)
-
-#define CRYPTO_num_locks (* (int (*)(void)) crypto_sw[0].ptr)
-#define CRYPTO_set_locking_callback \
- (* (void (*)(void (*)(int, int, const char *, int))) crypto_sw[1].ptr)
-#define CRYPTO_set_id_callback \
- (* (void (*)(unsigned long (*)(void))) crypto_sw[2].ptr)
-#define ERR_get_error (* (unsigned long (*)(void)) ssl_sw[3].ptr)
-#define ERR_error_string (* (char * (*)(unsigned long, char *)) ssl_sw[4].ptr)
-
-// set_ssl_option() function updates this array.
-// It loads SSL library dynamically and changes NULLs to the actual addresses
-// of respective functions. The macros above (like SSL_connect()) are really
-// just calling these functions indirectly via the pointer.
-static struct ssl_func ssl_sw[] = {
- {"SSL_free", NULL},
- {"SSL_accept", NULL},
- {"SSL_connect", NULL},
- {"SSL_read", NULL},
- {"SSL_write", NULL},
- {"SSL_get_error", NULL},
- {"SSL_set_fd", NULL},
- {"SSL_new", NULL},
- {"SSL_CTX_new", NULL},
- {"SSLv23_server_method", NULL},
- {"SSL_library_init", NULL},
- {"SSL_CTX_use_PrivateKey_file", NULL},
- {"SSL_CTX_use_certificate_file",NULL},
- {"SSL_CTX_set_default_passwd_cb",NULL},
- {"SSL_CTX_free", NULL},
- {"SSL_load_error_strings", NULL},
- {"SSL_CTX_use_certificate_chain_file", NULL},
- {NULL, NULL}
-};
-
-// Similar array as ssl_sw. These functions could be located in different lib.
-static struct ssl_func crypto_sw[] = {
- {"CRYPTO_num_locks", NULL},
- {"CRYPTO_set_locking_callback", NULL},
- {"CRYPTO_set_id_callback", NULL},
- {"ERR_get_error", NULL},
- {"ERR_error_string", NULL},
- {NULL, NULL}
-};
-#endif // NO_SSL_DL
-
-static const char *month_names[] = {
- "Jan", "Feb", "Mar", "Apr", "May", "Jun",
- "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
-};
-
-// Unified socket address. For IPv6 support, add IPv6 address structure
-// in the union u.
-struct usa {
- socklen_t len;
- union {
- struct sockaddr sa;
- struct sockaddr_in sin;
- } u;
-};
-
-// Describes a string (chunk of memory).
-struct vec {
- const char *ptr;
- size_t len;
-};
-
-// Structure used by mg_stat() function. Uses 64 bit file length.
-struct mgstat {
- int is_directory; // Directory marker
- int64_t size; // File size
- time_t mtime; // Modification time
-};
-
-// Describes listening socket, or socket which was accept()-ed by the master
-// thread and queued for future handling by the worker thread.
-struct socket {
- struct socket *next; // Linkage
- SOCKET sock; // Listening socket
- struct usa lsa; // Local socket address
- struct usa rsa; // Remote socket address
- int is_ssl; // Is socket SSL-ed
- int is_proxy;
-};
-
-enum {
- CGI_EXTENSIONS, CGI_ENVIRONMENT, PUT_DELETE_PASSWORDS_FILE, CGI_INTERPRETER,
- PROTECT_URI, AUTHENTICATION_DOMAIN, SSI_EXTENSIONS, ACCESS_LOG_FILE,
- SSL_CHAIN_FILE, ENABLE_DIRECTORY_LISTING, ERROR_LOG_FILE,
- GLOBAL_PASSWORDS_FILE, INDEX_FILES,
- ENABLE_KEEP_ALIVE, ACCESS_CONTROL_LIST, MAX_REQUEST_SIZE,
- EXTRA_MIME_TYPES, LISTENING_PORTS,
- DOCUMENT_ROOT, SSL_CERTIFICATE, NUM_THREADS, RUN_AS_USER,
- NUM_OPTIONS
-};
-
-static const char *config_options[] = {
- "C", "cgi_extensions", ".cgi,.pl,.php",
- "E", "cgi_environment", NULL,
- "G", "put_delete_passwords_file", NULL,
- "I", "cgi_interpreter", NULL,
- "P", "protect_uri", NULL,
- "R", "authentication_domain", "mydomain.com",
- "S", "ssi_extensions", ".shtml,.shtm",
- "a", "access_log_file", NULL,
- "c", "ssl_chain_file", NULL,
- "d", "enable_directory_listing", "yes",
- "e", "error_log_file", NULL,
- "g", "global_passwords_file", NULL,
- "i", "index_files", "index.html,index.htm,index.cgi",
- "k", "enable_keep_alive", "no",
- "l", "access_control_list", NULL,
- "M", "max_request_size", "16384",
- "m", "extra_mime_types", NULL,
- "p", "listening_ports", "8080",
- "r", "document_root", ".",
- "s", "ssl_certificate", NULL,
- "t", "num_threads", "10",
- "u", "run_as_user", NULL,
- NULL
-};
-#define ENTRIES_PER_CONFIG_OPTION 3
-
-struct mg_context {
- int stop_flag; // Should we stop event loop
- SSL_CTX *ssl_ctx; // SSL context
- char *config[NUM_OPTIONS]; // Mongoose configuration parameters
- mg_callback_pt user_callback; // User-defined callback function
-
- struct socket *listening_sockets;
-
- int num_threads; // Number of threads
- pthread_mutex_t mutex; // Protects (max|num)_threads
- pthread_cond_t cond; // Condvar for tracking workers terminations
-
- struct socket queue[20]; // Accepted sockets
- int sq_head; // Head of the socket queue
- int sq_tail; // Tail of the socket queue
- pthread_cond_t sq_full; // Singaled when socket is produced
- pthread_cond_t sq_empty; // Signaled when socket is consumed
-};
-
-struct mg_connection {
- struct mg_connection *peer; // Remote target in proxy mode
- struct mg_request_info request_info;
- struct mg_context *ctx;
- SSL *ssl; // SSL descriptor
- struct socket client; // Connected client
- time_t birth_time; // Time connection was accepted
- int64_t num_bytes_sent; // Total bytes sent to client
- int64_t content_len; // Content-Length header value
- int64_t consumed_content; // How many bytes of content is already read
- char *buf; // Buffer for received data
- int buf_size; // Buffer size
- int request_len; // Size of the request + headers in a buffer
- int data_len; // Total size of data in a buffer
-};
-
-const char **mg_get_valid_option_names(void) {
- return config_options;
-}
-
-static void *call_user(struct mg_connection *conn, enum mg_event event) {
- return conn->ctx->user_callback == NULL ? NULL :
- conn->ctx->user_callback(event, conn, &conn->request_info);
-}
-
-static int get_option_index(const char *name) {
- int i;
-
- for (i = 0; config_options[i] != NULL; i += ENTRIES_PER_CONFIG_OPTION) {
- if (strcmp(config_options[i], name) == 0 ||
- strcmp(config_options[i + 1], name) == 0) {
- return i / ENTRIES_PER_CONFIG_OPTION;
- }
- }
- return -1;
-}
-
-const char *mg_get_option(const struct mg_context *ctx, const char *name) {
- int i;
- if ((i = get_option_index(name)) == -1) {
- return NULL;
- } else if (ctx->config[i] == NULL) {
- return "";
- } else {
- return ctx->config[i];
- }
-}
-
-// Print error message to the opened error log stream.
-static void cry(struct mg_connection *conn, const char *fmt, ...) {
- char buf[BUFSIZ];
- va_list ap;
- FILE *fp;
- time_t timestamp;
-
- va_start(ap, fmt);
- (void) vsnprintf(buf, sizeof(buf), fmt, ap);
- va_end(ap);
-
- // Do not lock when getting the callback value, here and below.
- // I suppose this is fine, since function cannot disappear in the
- // same way string option can.
- conn->request_info.log_message = buf;
- if (call_user(conn, MG_EVENT_LOG) == NULL) {
- fp = conn->ctx->config[ERROR_LOG_FILE] == NULL ? NULL :
- mg_fopen(conn->ctx->config[ERROR_LOG_FILE], "a+");
-
- if (fp != NULL) {
- flockfile(fp);
- timestamp = time(NULL);
-
- (void) fprintf(fp,
- "[%010lu] [error] [client %s] ",
- (unsigned long) timestamp,
- inet_ntoa(conn->client.rsa.u.sin.sin_addr));
-
- if (conn->request_info.request_method != NULL) {
- (void) fprintf(fp, "%s %s: ",
- conn->request_info.request_method,
- conn->request_info.uri);
- }
-
- (void) fprintf(fp, "%s", buf);
- fputc('\n', fp);
- funlockfile(fp);
- if (fp != stderr) {
- fclose(fp);
- }
- }
- }
- conn->request_info.log_message = NULL;
-}
-
-// Return OpenSSL error message
-static const char *ssl_error(void) {
- unsigned long err;
- err = ERR_get_error();
- return err == 0 ? "" : ERR_error_string(err, NULL);
-}
-
-// Return fake connection structure. Used for logging, if connection
-// is not applicable at the moment of logging.
-static struct mg_connection *fc(struct mg_context *ctx) {
- static struct mg_connection fake_connection;
- fake_connection.ctx = ctx;
- return &fake_connection;
-}
-
-const char *mg_version(void) {
- return MONGOOSE_VERSION;
-}
-
-static void mg_strlcpy(register char *dst, register const char *src, size_t n) {
- for (; *src != '\0' && n > 1; n--) {
- *dst++ = *src++;
- }
- *dst = '\0';
-}
-
-static int lowercase(const char *s) {
- return tolower(* (unsigned char *) s);
-}
-
-static int mg_strncasecmp(const char *s1, const char *s2, size_t len) {
- int diff = 0;
-
- if (len > 0)
- do {
- diff = lowercase(s1++) - lowercase(s2++);
- } while (diff == 0 && s1[-1] != '\0' && --len > 0);
-
- return diff;
-}
-
-static int mg_strcasecmp(const char *s1, const char *s2) {
- int diff;
-
- do {
- diff = lowercase(s1++) - lowercase(s2++);
- } while (diff == 0 && s1[-1] != '\0');
-
- return diff;
-}
-
-static char * mg_strndup(const char *ptr, size_t len) {
- char *p;
-
- if ((p = (char *) malloc(len + 1)) != NULL) {
- mg_strlcpy(p, ptr, len + 1);
- }
-
- return p;
-}
-
-static char * mg_strdup(const char *str) {
- return mg_strndup(str, strlen(str));
-}
-
-// Like snprintf(), but never returns negative value, or the value
-// that is larger than a supplied buffer.
-// Thanks to Adam Zeldis to pointing snprintf()-caused vulnerability
-// in his audit report.
-static int mg_vsnprintf(struct mg_connection *conn, char *buf, size_t buflen,
- const char *fmt, va_list ap) {
- int n;
-
- if (buflen == 0)
- return 0;
-
- n = vsnprintf(buf, buflen, fmt, ap);
-
- if (n < 0) {
- cry(conn, "vsnprintf error");
- n = 0;
- } else if (n >= (int) buflen) {
- cry(conn, "truncating vsnprintf buffer: [%.*s]",
- n > 200 ? 200 : n, buf);
- n = (int) buflen - 1;
- }
- buf[n] = '\0';
-
- return n;
-}
-
-static int mg_snprintf(struct mg_connection *conn, char *buf, size_t buflen,
- const char *fmt, ...) {
- va_list ap;
- int n;
-
- va_start(ap, fmt);
- n = mg_vsnprintf(conn, buf, buflen, fmt, ap);
- va_end(ap);
-
- return n;
-}
-
-// Skip the characters until one of the delimiters characters found.
-// 0-terminate resulting word. Skip the rest of the delimiters if any.
-// Advance pointer to buffer to the next word. Return found 0-terminated word.
-static char *skip(char **buf, const char *delimiters) {
- char *p, *begin_word, *end_word, *end_delimiters;
-
- begin_word = *buf;
- end_word = begin_word + strcspn(begin_word, delimiters);
- end_delimiters = end_word + strspn(end_word, delimiters);
-
- for (p = end_word; p < end_delimiters; p++) {
- *p = '\0';
- }
-
- *buf = end_delimiters;
-
- return begin_word;
-}
-
-// Return HTTP header value, or NULL if not found.
-static const char *get_header(const struct mg_request_info *ri,
- const char *name) {
- int i;
-
- for (i = 0; i < ri->num_headers; i++)
- if (!mg_strcasecmp(name, ri->http_headers[i].name))
- return ri->http_headers[i].value;
-
- return NULL;
-}
-
-const char *mg_get_header(const struct mg_connection *conn, const char *name) {
- return get_header(&conn->request_info, name);
-}
-
-// A helper function for traversing comma separated list of values.
-// It returns a list pointer shifted to the next value, of NULL if the end
-// of the list found.
-// Value is stored in val vector. If value has form "x=y", then eq_val
-// vector is initialized to point to the "y" part, and val vector length
-// is adjusted to point only to "x".
-static const char *next_option(const char *list, struct vec *val,
- struct vec *eq_val) {
- if (list == NULL || *list == '\0') {
- /* End of the list */
- list = NULL;
- } else {
- val->ptr = list;
- if ((list = strchr(val->ptr, ',')) != NULL) {
- /* Comma found. Store length and shift the list ptr */
- val->len = list - val->ptr;
- list++;
- } else {
- /* This value is the last one */
- list = val->ptr + strlen(val->ptr);
- val->len = list - val->ptr;
- }
-
- if (eq_val != NULL) {
- /*
- * Value has form "x=y", adjust pointers and lengths
- * so that val points to "x", and eq_val points to "y".
- */
- eq_val->len = 0;
- eq_val->ptr = memchr(val->ptr, '=', val->len);
- if (eq_val->ptr != NULL) {
- eq_val->ptr++; /* Skip over '=' character */
- eq_val->len = val->ptr + val->len - eq_val->ptr;
- val->len = (eq_val->ptr - val->ptr) - 1;
- }
- }
- }
-
- return list;
-}
-
-#if !defined(NO_CGI)
-static int match_extension(const char *path, const char *ext_list) {
- struct vec ext_vec;
- size_t path_len;
-
- path_len = strlen(path);
-
- while ((ext_list = next_option(ext_list, &ext_vec, NULL)) != NULL)
- if (ext_vec.len < path_len &&
- mg_strncasecmp(path + path_len - ext_vec.len,
- ext_vec.ptr, ext_vec.len) == 0)
- return 1;
-
- return 0;
-}
-#endif // !NO_CGI
-
-// HTTP 1.1 assumes keep alive if "Connection:" header is not set
-// This function must tolerate situations when connection info is not
-// set up, for example if request parsing failed.
-static int should_keep_alive(const struct mg_connection *conn) {
- const char *http_version = conn->request_info.http_version;
- const char *header = mg_get_header(conn, "Connection");
- return (header == NULL && http_version && !strcmp(http_version, "1.1")) ||
- (header != NULL && !strcmp(header, "keep-alive"));
-}
-
-static const char *suggest_connection_header(const struct mg_connection *conn) {
- return should_keep_alive(conn) ? "keep-alive" : "close";
-}
-
-static void send_http_error(struct mg_connection *conn, int status,
- const char *reason, const char *fmt, ...) {
- char buf[BUFSIZ];
- va_list ap;
- int len;
-
- conn->request_info.status_code = status;
-
- if (call_user(conn, MG_HTTP_ERROR) == NULL) {
- buf[0] = '\0';
- len = 0;
-
- /* Errors 1xx, 204 and 304 MUST NOT send a body */
- if (status > 199 && status != 204 && status != 304) {
- len = mg_snprintf(conn, buf, sizeof(buf), "Error %d: %s", status, reason);
- cry(conn, "%s", buf);
- buf[len++] = '\n';
-
- va_start(ap, fmt);
- len += mg_vsnprintf(conn, buf + len, sizeof(buf) - len, fmt, ap);
- va_end(ap);
- }
- DEBUG_TRACE(("[%s]", buf));
-
- mg_printf(conn, "HTTP/1.1 %d %s\r\n"
- "Content-Type: text/plain\r\n"
- "Content-Length: %d\r\n"
- "Connection: %s\r\n\r\n", status, reason, len,
- suggest_connection_header(conn));
- conn->num_bytes_sent += mg_printf(conn, "%s", buf);
- }
-}
-
-#ifdef _WIN32
-static int pthread_mutex_init(pthread_mutex_t *mutex, void *unused) {
- unused = NULL;
- *mutex = CreateMutex(NULL, FALSE, NULL);
- return *mutex == NULL ? -1 : 0;
-}
-
-static int pthread_mutex_destroy(pthread_mutex_t *mutex) {
- return CloseHandle(*mutex) == 0 ? -1 : 0;
-}
-
-static int pthread_mutex_lock(pthread_mutex_t *mutex) {
- return WaitForSingleObject(*mutex, INFINITE) == WAIT_OBJECT_0? 0 : -1;
-}
-
-static int pthread_mutex_unlock(pthread_mutex_t *mutex) {
- return ReleaseMutex(*mutex) == 0 ? -1 : 0;
-}
-
-static int pthread_cond_init(pthread_cond_t *cv, const void *unused) {
- unused = NULL;
- cv->signal = CreateEvent(NULL, FALSE, FALSE, NULL);
- cv->broadcast = CreateEvent(NULL, TRUE, FALSE, NULL);
- return cv->signal != NULL && cv->broadcast != NULL ? 0 : -1;
-}
-
-static int pthread_cond_wait(pthread_cond_t *cv, pthread_mutex_t *mutex) {
- HANDLE handles[] = {cv->signal, cv->broadcast};
- ReleaseMutex(*mutex);
- WaitForMultipleObjects(2, handles, FALSE, INFINITE);
- return ReleaseMutex(*mutex) == 0 ? -1 : 0;
-}
-
-static int pthread_cond_signal(pthread_cond_t *cv) {
- return SetEvent(cv->signal) == 0 ? -1 : 0;
-}
-
-static int pthread_cond_broadcast(pthread_cond_t *cv) {
- // Implementation with PulseEvent() has race condition, see
- // http://www.cs.wustl.edu/~schmidt/win32-cv-1.html
- return PulseEvent(cv->broadcast) == 0 ? -1 : 0;
-}
-
-static int pthread_cond_destroy(pthread_cond_t *cv) {
- return CloseHandle(cv->signal) && CloseHandle(cv->broadcast) ? 0 : -1;
-}
-
-static pthread_t pthread_self(void) {
- return GetCurrentThreadId();
-}
-
-// For Windows, change all slashes to backslashes in path names.
-static void change_slashes_to_backslashes(char *path) {
- int i;
-
- for (i = 0; path[i] != '\0'; i++) {
- if (path[i] == '/')
- path[i] = '\\';
- // i > 0 check is to preserve UNC paths, like \\server\file.txt
- if (path[i] == '\\' && i > 0)
- while (path[i + 1] == '\\' || path[i + 1] == '/')
- (void) memmove(path + i + 1,
- path + i + 2, strlen(path + i + 1));
- }
-}
-
-// Encode 'path' which is assumed UTF-8 string, into UNICODE string.
-// wbuf and wbuf_len is a target buffer and its length.
-static void to_unicode(const char *path, wchar_t *wbuf, size_t wbuf_len) {
- char buf[PATH_MAX], *p;
-
- mg_strlcpy(buf, path, sizeof(buf));
- change_slashes_to_backslashes(buf);
-
- // Point p to the end of the file name
- p = buf + strlen(buf) - 1;
-
- // Trim trailing backslash character
- while (p > buf && *p == '\\' && p[-1] != ':') {
- *p-- = '\0';
- }
-
- // Protect from CGI code disclosure.
- // This is very nasty hole. Windows happily opens files with
- // some garbage in the end of file name. So fopen("a.cgi ", "r")
- // actually opens "a.cgi", and does not return an error!
- if (*p == 0x20 || // No space at the end
- (*p == 0x2e && p > buf) || // No '.' but allow '.' as full path
- *p == 0x2b || // No '+'
- (*p & ~0x7f)) { // And generally no non-ascii chars
- (void) fprintf(stderr, "Rejecting suspicious path: [%s]", buf);
- buf[0] = '\0';
- }
-
- (void) MultiByteToWideChar(CP_UTF8, 0, buf, -1, wbuf, (int) wbuf_len);
-}
-
-#if defined(_WIN32_WCE)
-static time_t time(time_t *ptime) {
- time_t t;
- SYSTEMTIME st;
- FILETIME ft;
-
- GetSystemTime(&st);
- SystemTimeToFileTime(&st, &ft);
- t = SYS2UNIX_TIME(ft.dwLowDateTime, ft.dwHighDateTime);
-
- if (ptime != NULL) {
- *ptime = t;
- }
-
- return t;
-}
-
-static time_t mktime(struct tm *ptm) {
- SYSTEMTIME st;
- FILETIME ft, lft;
-
- st.wYear = ptm->tm_year + 1900;
- st.wMonth = ptm->tm_mon + 1;
- st.wDay = ptm->tm_mday;
- st.wHour = ptm->tm_hour;
- st.wMinute = ptm->tm_min;
- st.wSecond = ptm->tm_sec;
- st.wMilliseconds = 0;
-
- SystemTimeToFileTime(&st, &ft);
- LocalFileTimeToFileTime(&ft, &lft);
- return (time_t) ((MAKEUQUAD(lft.dwLowDateTime, lft.dwHighDateTime) -
- EPOCH_DIFF) / RATE_DIFF);
-}
-
-static struct tm *localtime(const time_t *ptime, struct tm *ptm) {
- int64_t t = ((int64_t) *ptime) * RATE_DIFF + EPOCH_DIFF;
- FILETIME ft, lft;
- SYSTEMTIME st;
- TIME_ZONE_INFORMATION tzinfo;
-
- if (ptm == NULL) {
- return NULL;
- }
-
- * (int64_t *) &ft = t;
- FileTimeToLocalFileTime(&ft, &lft);
- FileTimeToSystemTime(&lft, &st);
- ptm->tm_year = st.wYear - 1900;
- ptm->tm_mon = st.wMonth - 1;
- ptm->tm_wday = st.wDayOfWeek;
- ptm->tm_mday = st.wDay;
- ptm->tm_hour = st.wHour;
- ptm->tm_min = st.wMinute;
- ptm->tm_sec = st.wSecond;
- ptm->tm_yday = 0; // hope nobody uses this
- ptm->tm_isdst =
- GetTimeZoneInformation(&tzinfo) == TIME_ZONE_ID_DAYLIGHT ? 1 : 0;
-
- return ptm;
-}
-
-static size_t strftime(char *dst, size_t dst_size, const char *fmt,
- const struct tm *tm) {
- (void) snprintf(dst, dst_size, "implement strftime() for WinCE");
- return 0;
-}
-#endif
-
-static int mg_rename(const char* oldname, const char* newname) {
- wchar_t woldbuf[PATH_MAX];
- wchar_t wnewbuf[PATH_MAX];
-
- to_unicode(oldname, woldbuf, ARRAY_SIZE(woldbuf));
- to_unicode(newname, wnewbuf, ARRAY_SIZE(wnewbuf));
-
- return MoveFileW(woldbuf, wnewbuf) ? 0 : -1;
-}
-
-
-static FILE *mg_fopen(const char *path, const char *mode) {
- wchar_t wbuf[PATH_MAX], wmode[20];
-
- to_unicode(path, wbuf, ARRAY_SIZE(wbuf));
- MultiByteToWideChar(CP_UTF8, 0, mode, -1, wmode, ARRAY_SIZE(wmode));
-
- return _wfopen(wbuf, wmode);
-}
-
-static int mg_stat(const char *path, struct mgstat *stp) {
- int ok = -1; // Error
- wchar_t wbuf[PATH_MAX];
- WIN32_FILE_ATTRIBUTE_DATA info;
-
- to_unicode(path, wbuf, ARRAY_SIZE(wbuf));
-
- if (GetFileAttributesExW(wbuf, GetFileExInfoStandard, &info) != 0) {
- stp->size = MAKEUQUAD(info.nFileSizeLow, info.nFileSizeHigh);
- stp->mtime = SYS2UNIX_TIME(info.ftLastWriteTime.dwLowDateTime,
- info.ftLastWriteTime.dwHighDateTime);
- stp->is_directory =
- info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY;
- ok = 0; // Success
- }
-
- return ok;
-}
-
-static int mg_remove(const char *path) {
- wchar_t wbuf[PATH_MAX];
- to_unicode(path, wbuf, ARRAY_SIZE(wbuf));
- return DeleteFileW(wbuf) ? 0 : -1;
-}
-
-static int mg_mkdir(const char *path, int mode) {
- char buf[PATH_MAX];
- wchar_t wbuf[PATH_MAX];
-
- mode = 0; // Unused
- mg_strlcpy(buf, path, sizeof(buf));
- change_slashes_to_backslashes(buf);
-
- (void) MultiByteToWideChar(CP_UTF8, 0, buf, -1, wbuf, sizeof(wbuf));
-
- return CreateDirectoryW(wbuf, NULL) ? 0 : -1;
-}
-
-// Implementation of POSIX opendir/closedir/readdir for Windows.
-static DIR * opendir(const char *name) {
- DIR *dir = NULL;
- wchar_t wpath[PATH_MAX];
- DWORD attrs;
-
- if (name == NULL) {
- SetLastError(ERROR_BAD_ARGUMENTS);
- } else if ((dir = (DIR *) malloc(sizeof(*dir))) == NULL) {
- SetLastError(ERROR_NOT_ENOUGH_MEMORY);
- } else {
- to_unicode(name, wpath, ARRAY_SIZE(wpath));
- attrs = GetFileAttributesW(wpath);
- if (attrs != 0xFFFFFFFF &&
- ((attrs & FILE_ATTRIBUTE_DIRECTORY) == FILE_ATTRIBUTE_DIRECTORY)) {
- (void) wcscat(wpath, L"\\*");
- dir->handle = FindFirstFileW(wpath, &dir->info);
- dir->result.d_name[0] = '\0';
- } else {
- free(dir);
- dir = NULL;
- }
- }
-
- return dir;
-}
-
-static int closedir(DIR *dir) {
- int result = 0;
-
- if (dir != NULL) {
- if (dir->handle != INVALID_HANDLE_VALUE)
- result = FindClose(dir->handle) ? 0 : -1;
-
- free(dir);
- } else {
- result = -1;
- SetLastError(ERROR_BAD_ARGUMENTS);
- }
-
- return result;
-}
-
-struct dirent * readdir(DIR *dir) {
- struct dirent *result = 0;
-
- if (dir) {
- if (dir->handle != INVALID_HANDLE_VALUE) {
- result = &dir->result;
- (void) WideCharToMultiByte(CP_UTF8, 0,
- dir->info.cFileName, -1, result->d_name,
- sizeof(result->d_name), NULL, NULL);
-
- if (!FindNextFileW(dir->handle, &dir->info)) {
- (void) FindClose(dir->handle);
- dir->handle = INVALID_HANDLE_VALUE;
- }
-
- } else {
- SetLastError(ERROR_FILE_NOT_FOUND);
- }
- } else {
- SetLastError(ERROR_BAD_ARGUMENTS);
- }
-
- return result;
-}
-
-#define set_close_on_exec(fd) // No FD_CLOEXEC on Windows
-
-static int start_thread(struct mg_context *ctx, mg_thread_func_pt func,
- void *param) {
- HANDLE hThread;
- ctx = NULL; // Unused
-
- hThread = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE) func, param, 0,
- NULL);
- if (hThread != NULL) {
- (void) CloseHandle(hThread);
- }
-
- return hThread == NULL ? -1 : 0;
-}
-
-static HANDLE dlopen(const char *dll_name, int flags) {
- wchar_t wbuf[PATH_MAX];
- flags = 0; // Unused
- to_unicode(dll_name, wbuf, ARRAY_SIZE(wbuf));
- return LoadLibraryW(wbuf);
-}
-
-#if !defined(NO_CGI)
-#define SIGKILL 0
-static int kill(pid_t pid, int sig_num) {
- (void) TerminateProcess(pid, sig_num);
- (void) CloseHandle(pid);
- return 0;
-}
-
-static pid_t spawn_process(struct mg_connection *conn, const char *prog,
- char *envblk, char *envp[], int fd_stdin,
- int fd_stdout, const char *dir) {
- HANDLE me;
- char *p, *interp, cmdline[PATH_MAX], buf[PATH_MAX];
- FILE *fp;
- STARTUPINFOA si;
- PROCESS_INFORMATION pi;
-
- envp = NULL; // Unused
-
- (void) memset(&si, 0, sizeof(si));
- (void) memset(&pi, 0, sizeof(pi));
-
- // TODO(lsm): redirect CGI errors to the error log file
- si.cb = sizeof(si);
- si.dwFlags = STARTF_USESTDHANDLES | STARTF_USESHOWWINDOW;
- si.wShowWindow = SW_HIDE;
-
- me = GetCurrentProcess();
- (void) DuplicateHandle(me, (HANDLE) _get_osfhandle(fd_stdin), me,
- &si.hStdInput, 0, TRUE, DUPLICATE_SAME_ACCESS);
- (void) DuplicateHandle(me, (HANDLE) _get_osfhandle(fd_stdout), me,
- &si.hStdOutput, 0, TRUE, DUPLICATE_SAME_ACCESS);
-
- // If CGI file is a script, try to read the interpreter line
- interp = conn->ctx->config[CGI_INTERPRETER];
- if (interp == NULL) {
- buf[2] = '\0';
- if ((fp = fopen(cmdline, "r")) != NULL) {
- (void) fgets(buf, sizeof(buf), fp);
- if (buf[0] != '#' || buf[1] != '!') {
- // First line does not start with "#!". Do not set interpreter.
- buf[2] = '\0';
- } else {
- // Trim whitespaces in interpreter name
- for (p = &buf[strlen(buf) - 1]; p > buf && isspace(*p); p--) {
- *p = '\0';
- }
- }
- (void) fclose(fp);
- }
- interp = buf + 2;
- }
-
- (void) mg_snprintf(conn, cmdline, sizeof(cmdline), "%s%s%s%c%s",
- interp, interp[0] == '\0' ? "" : " ", dir, DIRSEP, prog);
-
- DEBUG_TRACE(("Running [%s]", cmdline));
- if (CreateProcessA(NULL, cmdline, NULL, NULL, TRUE,
- CREATE_NEW_PROCESS_GROUP, envblk, dir, &si, &pi) == 0) {
- cry(conn, "%s: CreateProcess(%s): %d",
- __func__, cmdline, ERRNO);
- pi.hProcess = (pid_t) -1;
- } else {
- (void) close(fd_stdin);
- (void) close(fd_stdout);
- }
-
- (void) CloseHandle(si.hStdOutput);
- (void) CloseHandle(si.hStdInput);
- (void) CloseHandle(pi.hThread);
-
- return (pid_t) pi.hProcess;
-}
-#endif /* !NO_CGI */
-
-static int set_non_blocking_mode(SOCKET sock) {
- unsigned long on = 1;
- return ioctlsocket(sock, FIONBIO, &on);
-}
-
-#else
-static int mg_stat(const char *path, struct mgstat *stp) {
- struct stat st;
- int ok;
-
- if (stat(path, &st) == 0) {
- ok = 0;
- stp->size = st.st_size;
- stp->mtime = st.st_mtime;
- stp->is_directory = S_ISDIR(st.st_mode);
- } else {
- ok = -1;
- }
-
- return ok;
-}
-
-static void set_close_on_exec(int fd) {
- (void) fcntl(fd, F_SETFD, FD_CLOEXEC);
-}
-
-static int start_thread(struct mg_context *ctx, mg_thread_func_pt func,
- void *param) {
- pthread_t thread_id;
- pthread_attr_t attr;
- int retval;
-
- (void) pthread_attr_init(&attr);
- (void) pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
- // TODO(lsm): figure out why mongoose dies on Linux if next line is enabled
- // (void) pthread_attr_setstacksize(&attr, sizeof(struct mg_connection) * 5);
-
- if ((retval = pthread_create(&thread_id, &attr, func, param)) != 0) {
- cry(fc(ctx), "%s: %s", __func__, strerror(retval));
- }
-
- return retval;
-}
-
-#ifndef NO_CGI
-static pid_t spawn_process(struct mg_connection *conn, const char *prog,
- char *envblk, char *envp[], int fd_stdin,
- int fd_stdout, const char *dir) {
- pid_t pid;
- const char *interp;
-
- envblk = NULL; // Unused
-
- if ((pid = fork()) == -1) {
- // Parent
- send_http_error(conn, 500, http_500_error, "fork(): %s", strerror(ERRNO));
- } else if (pid == 0) {
- // Child
- if (chdir(dir) != 0) {
- cry(conn, "%s: chdir(%s): %s", __func__, dir, strerror(ERRNO));
- } else if (dup2(fd_stdin, 0) == -1) {
- cry(conn, "%s: dup2(%d, 0): %s", __func__, fd_stdin, strerror(ERRNO));
- } else if (dup2(fd_stdout, 1) == -1) {
- cry(conn, "%s: dup2(%d, 1): %s", __func__, fd_stdout, strerror(ERRNO));
- } else {
- (void) dup2(fd_stdout, 2);
- (void) close(fd_stdin);
- (void) close(fd_stdout);
-
- // Execute CGI program. No need to lock: new process
- interp = conn->ctx->config[CGI_INTERPRETER];
- if (interp == NULL) {
- (void) execle(prog, prog, NULL, envp);
- cry(conn, "%s: execle(%s): %s", __func__, prog, strerror(ERRNO));
- } else {
- (void) execle(interp, interp, prog, NULL, envp);
- cry(conn, "%s: execle(%s %s): %s", __func__, interp, prog,
- strerror(ERRNO));
- }
- }
- exit(EXIT_FAILURE);
- } else {
- // Parent. Close stdio descriptors
- (void) close(fd_stdin);
- (void) close(fd_stdout);
- }
-
- return pid;
-}
-#endif // !NO_CGI
-
-static int set_non_blocking_mode(SOCKET sock) {
- int flags;
-
- flags = fcntl(sock, F_GETFL, 0);
- (void) fcntl(sock, F_SETFL, flags | O_NONBLOCK);
-
- return 0;
-}
-#endif // _WIN32
-
-// Write data to the IO channel - opened file descriptor, socket or SSL
-// descriptor. Return number of bytes written.
-static int64_t push(FILE *fp, SOCKET sock, SSL *ssl, const char *buf,
- int64_t len) {
- int64_t sent;
- int n, k;
-
- sent = 0;
- while (sent < len) {
-
- /* How many bytes we send in this iteration */
- k = len - sent > INT_MAX ? INT_MAX : (int) (len - sent);
-
- if (ssl != NULL) {
- n = SSL_write(ssl, buf + sent, k);
- } else if (fp != NULL) {
- n = fwrite(buf + sent, 1, k, fp);
- if (ferror(fp))
- n = -1;
- } else {
- n = send(sock, buf + sent, k, 0);
- }
-
- if (n < 0)
- break;
-
- sent += n;
- }
-
- return sent;
-}
-
-// Read from IO channel - opened file descriptor, socket, or SSL descriptor.
-// Return number of bytes read.
-static int pull(FILE *fp, SOCKET sock, SSL *ssl, char *buf, int len) {
- int nread;
-
- if (ssl != NULL) {
- nread = SSL_read(ssl, buf, len);
- } else if (fp != NULL) {
- nread = fread(buf, 1, (size_t) len, fp);
- if (ferror(fp))
- nread = -1;
- } else {
- nread = recv(sock, buf, (size_t) len, 0);
- }
-
- return nread;
-}
-
-int mg_read(struct mg_connection *conn, void *buf, size_t len) {
- int n, buffered_len, nread;
- const char *buffered;
-
- assert(conn->content_len >= conn->consumed_content);
- DEBUG_TRACE(("%p %zu %lld %lld", buf, len,
- conn->content_len, conn->consumed_content));
- nread = 0;
- if (strcmp(conn->request_info.request_method, "POST") == 0 &&
- conn->consumed_content < conn->content_len) {
-
- // Adjust number of bytes to read.
- int64_t to_read = conn->content_len - conn->consumed_content;
- if (to_read < (int64_t) len) {
- len = (int) to_read;
- }
-
- // How many bytes of data we have buffered in the request buffer?
- buffered = conn->buf + conn->request_len;
- buffered_len = conn->data_len - conn->request_len;
- assert(buffered_len >= 0);
-
- // Return buffered data back if we haven't done that yet.
- if (conn->consumed_content < (int64_t) buffered_len) {
- buffered_len -= (int) conn->consumed_content;
- if (len < (size_t) buffered_len) {
- buffered_len = len;
- }
- memcpy(buf, buffered, buffered_len);
- len -= buffered_len;
- buf = (char *) buf + buffered_len;
- conn->consumed_content += buffered_len;
- nread = buffered_len;
- }
-
- // We have returned all buffered data. Read new data from the remote socket.
- while (len > 0) {
- n = pull(NULL, conn->client.sock, conn->ssl, (char *) buf, (int) len);
- if (n <= 0) {
- break;
- }
- buf = (char *) buf + n;
- conn->consumed_content += n;
- nread += n;
- len -= n;
- }
- }
- return nread;
-}
-
-int mg_write(struct mg_connection *conn, const void *buf, size_t len) {
- return (int) push(NULL, conn->client.sock, conn->ssl,
- (const char *) buf, (int64_t) len);
-}
-
-int mg_printf(struct mg_connection *conn, const char *fmt, ...) {
- char buf[BUFSIZ];
- int len;
- va_list ap;
-
- va_start(ap, fmt);
- len = mg_vsnprintf(conn, buf, sizeof(buf), fmt, ap);
- va_end(ap);
-
- return mg_write(conn, buf, len);
-}
-
-// URL-decode input buffer into destination buffer.
-// 0-terminate the destination buffer. Return the length of decoded data.
-// form-url-encoded data differs from URI encoding in a way that it
-// uses '+' as character for space, see RFC 1866 section 8.2.1
-// http://ftp.ics.uci.edu/pub/ietf/html/rfc1866.txt
-static size_t url_decode(const char *src, size_t src_len, char *dst,
- size_t dst_len, int is_form_url_encoded) {
- size_t i, j;
- int a, b;
-#define HEXTOI(x) (isdigit(x) ? x - '0' : x - 'W')
-
- for (i = j = 0; i < src_len && j < dst_len - 1; i++, j++) {
- if (src[i] == '%' &&
- isxdigit(* (unsigned char *) (src + i + 1)) &&
- isxdigit(* (unsigned char *) (src + i + 2))) {
- a = tolower(* (unsigned char *) (src + i + 1));
- b = tolower(* (unsigned char *) (src + i + 2));
- dst[j] = (char) ((HEXTOI(a) << 4) | HEXTOI(b));
- i += 2;
- } else if (is_form_url_encoded && src[i] == '+') {
- dst[j] = ' ';
- } else {
- dst[j] = src[i];
- }
- }
-
- dst[j] = '\0'; /* Null-terminate the destination */
-
- return j;
-}
-
-// Scan given buffer and fetch the value of the given variable.
-// It can be specified in query string, or in the POST data.
-// Return NULL if the variable not found, or allocated 0-terminated value.
-// It is caller's responsibility to free the returned value.
-int mg_get_var(const char *buf, size_t buf_len, const char *name,
- char *dst, size_t dst_len) {
- const char *p, *e, *s;
- size_t name_len, len;
-
- name_len = strlen(name);
- e = buf + buf_len;
- len = -1;
- dst[0] = '\0';
-
- // buf is "var1=val1&var2=val2...". Find variable first
- for (p = buf; p != NULL && p + name_len < e; p++) {
- if ((p == buf || p[-1] == '&') && p[name_len] == '=' &&
- !mg_strncasecmp(name, p, name_len)) {
-
- // Point p to variable value
- p += name_len + 1;
-
- // Point s to the end of the value
- s = (const char *) memchr(p, '&', e - p);
- if (s == NULL) {
- s = e;
- }
- assert(s >= p);
-
- // Decode variable into destination buffer
- if ((size_t) (s - p) < dst_len) {
- len = url_decode(p, s - p, dst, dst_len, 1);
- }
- break;
- }
- }
-
- return len;
-}
-
-int mg_get_cookie(const struct mg_connection *conn, const char *cookie_name,
- char *dst, size_t dst_size) {
- const char *s, *p, *end;
- int name_len, len = -1;
-
- dst[0] = '\0';
- if ((s = mg_get_header(conn, "Cookie")) == NULL) {
- return 0;
- }
-
- name_len = strlen(cookie_name);
- end = s + strlen(s);
-
- for (; (s = strstr(s, cookie_name)) != NULL; s += name_len)
- if (s[name_len] == '=') {
- s += name_len + 1;
- if ((p = strchr(s, ' ')) == NULL)
- p = end;
- if (p[-1] == ';')
- p--;
- if (*s == '"' && p[-1] == '"' && p > s + 1) {
- s++;
- p--;
- }
- if ((size_t) (p - s) < dst_size) {
- len = (p - s) + 1;
- mg_strlcpy(dst, s, len);
- }
- break;
- }
-
- return len;
-}
-
-// Mongoose allows to specify multiple directories to serve,
-// like /var/www,/~bob=/home/bob. That means that root directory depends on URI.
-// This function returns root dir for given URI.
-static int get_document_root(const struct mg_connection *conn,
- struct vec *document_root) {
- const char *root, *uri;
- int len_of_matched_uri;
- struct vec uri_vec, path_vec;
-
- uri = conn->request_info.uri;
- len_of_matched_uri = 0;
- root = next_option(conn->ctx->config[DOCUMENT_ROOT], document_root, NULL);
-
- while ((root = next_option(root, &uri_vec, &path_vec)) != NULL) {
- if (memcmp(uri, uri_vec.ptr, uri_vec.len) == 0) {
- *document_root = path_vec;
- len_of_matched_uri = uri_vec.len;
- break;
- }
- }
-
- return len_of_matched_uri;
-}
-
-static void convert_uri_to_file_name(struct mg_connection *conn,
- const char *uri, char *buf,
- size_t buf_len) {
- struct vec vec;
- int match_len;
-
- match_len = get_document_root(conn, &vec);
- mg_snprintf(conn, buf, buf_len, "%.*s%s", vec.len, vec.ptr, uri + match_len);
-
-#ifdef _WIN32
- change_slashes_to_backslashes(buf);
-#endif /* _WIN32 */
-
- DEBUG_TRACE(("[%s] -> [%s], [%.*s]", uri, buf, (int) vec.len, vec.ptr));
-}
-
-static int sslize(struct mg_connection *conn, int (*func)(SSL *)) {
- return (conn->ssl = SSL_new(conn->ctx->ssl_ctx)) != NULL &&
- SSL_set_fd(conn->ssl, conn->client.sock) == 1 &&
- func(conn->ssl) == 1;
-}
-
-struct mg_connection *mg_connect(struct mg_connection *conn,
- const char *host, int port, int use_ssl) {
- struct mg_connection *newconn = NULL;
- struct sockaddr_in sin;
- struct hostent *he;
- int sock;
-
- if (conn->ctx->ssl_ctx == NULL && use_ssl) {
- cry(conn, "%s: SSL is not initialized", __func__);
- } else if ((he = gethostbyname(host)) == NULL) {
- cry(conn, "%s: gethostbyname(%s): %s", __func__, host, strerror(ERRNO));
- } else if ((sock = socket(PF_INET, SOCK_STREAM, 0)) == INVALID_SOCKET) {
- cry(conn, "%s: socket: %s", __func__, strerror(ERRNO));
- } else {
- sin.sin_family = AF_INET;
- sin.sin_port = htons((uint16_t) port);
- sin.sin_addr = * (struct in_addr *) he->h_addr_list[0];
- if (connect(sock, (struct sockaddr *) &sin, sizeof(sin)) != 0) {
- cry(conn, "%s: connect(%s:%d): %s", __func__, host, port,
- strerror(ERRNO));
- closesocket(sock);
- } else if ((newconn = calloc(1, sizeof(*newconn))) == NULL) {
- cry(conn, "%s: calloc: %s", __func__, strerror(ERRNO));
- closesocket(sock);
- } else {
- newconn->client.sock = sock;
- newconn->client.rsa.u.sin = sin;
- if (use_ssl) {
- sslize(newconn, SSL_connect);
- }
- }
- }
-
- return newconn;
-}
-
-// Check whether full request is buffered. Return:
-// -1 if request is malformed
-// 0 if request is not yet fully buffered
-// >0 actual request length, including last \r\n\r\n
-static int get_request_len(const char *buf, int buflen) {
- const char *s, *e;
- int len = 0;
-
- DEBUG_TRACE(("buf: %p, len: %d", buf, buflen));
- for (s = buf, e = s + buflen - 1; len <= 0 && s < e; s++)
- // Control characters are not allowed but >=128 is.
- if (!isprint(* (unsigned char *) s) && *s != '\r' &&
- *s != '\n' && * (unsigned char *) s < 128) {
- len = -1;
- } else if (s[0] == '\n' && s[1] == '\n') {
- len = (int) (s - buf) + 2;
- } else if (s[0] == '\n' && &s[1] < e &&
- s[1] == '\r' && s[2] == '\n') {
- len = (int) (s - buf) + 3;
- }
-
- return len;
-}
-
-// Convert month to the month number. Return -1 on error, or month number
-static int month_number_to_month_name(const char *s) {
- size_t i;
-
- for (i = 0; i < ARRAY_SIZE(month_names); i++)
- if (!strcmp(s, month_names[i]))
- return (int) i;
-
- return -1;
-}
-
-// Parse date-time string, and return the corresponding time_t value
-static time_t parse_date_string(const char *s) {
- time_t current_time;
- struct tm tm, *tmp;
- char mon[32];
- int sec, min, hour, mday, month, year;
-
- (void) memset(&tm, 0, sizeof(tm));
- sec = min = hour = mday = month = year = 0;
-
- if (((sscanf(s, "%d/%3s/%d %d:%d:%d",
- &mday, mon, &year, &hour, &min, &sec) == 6) ||
- (sscanf(s, "%d %3s %d %d:%d:%d",
- &mday, mon, &year, &hour, &min, &sec) == 6) ||
- (sscanf(s, "%*3s, %d %3s %d %d:%d:%d",
- &mday, mon, &year, &hour, &min, &sec) == 6) ||
- (sscanf(s, "%d-%3s-%d %d:%d:%d",
- &mday, mon, &year, &hour, &min, &sec) == 6)) &&
- (month = month_number_to_month_name(mon)) != -1) {
- tm.tm_mday = mday;
- tm.tm_mon = month;
- tm.tm_year = year;
- tm.tm_hour = hour;
- tm.tm_min = min;
- tm.tm_sec = sec;
- }
-
- if (tm.tm_year > 1900) {
- tm.tm_year -= 1900;
- } else if (tm.tm_year < 70) {
- tm.tm_year += 100;
- }
-
- // Set Daylight Saving Time field
- current_time = time(NULL);
- tmp = localtime(¤t_time);
- tm.tm_isdst = tmp->tm_isdst;
-
- return mktime(&tm);
-}
-
-// Protect against directory disclosure attack by removing '..',
-// excessive '/' and '\' characters
-static void remove_double_dots_and_double_slashes(char *s) {
- char *p = s;
-
- while (*s != '\0') {
- *p++ = *s++;
- if (s[-1] == '/' || s[-1] == '\\') {
- // Skip all following slashes and backslashes
- while (*s == '/' || *s == '\\') {
- s++;
- }
-
- // Skip all double-dots
- while (*s == '.' && s[1] == '.') {
- s += 2;
- }
- }
- }
- *p = '\0';
-}
-
-static const struct {
- const char *extension;
- size_t ext_len;
- const char *mime_type;
- size_t mime_type_len;
-} builtin_mime_types[] = {
- {".html", 5, "text/html", 9},
- {".htm", 4, "text/html", 9},
- {".shtm", 5, "text/html", 9},
- {".shtml", 6, "text/html", 9},
- {".css", 4, "text/css", 8},
- {".js", 3, "application/x-javascript", 24},
- {".ico", 4, "image/x-icon", 12},
- {".gif", 4, "image/gif", 9},
- {".jpg", 4, "image/jpeg", 10},
- {".jpeg", 5, "image/jpeg", 10},
- {".png", 4, "image/png", 9},
- {".svg", 4, "image/svg+xml", 13},
- {".torrent", 8, "application/x-bittorrent", 24},
- {".wav", 4, "audio/x-wav", 11},
- {".mp3", 4, "audio/x-mp3", 11},
- {".mid", 4, "audio/mid", 9},
- {".m3u", 4, "audio/x-mpegurl", 15},
- {".ram", 4, "audio/x-pn-realaudio", 20},
- {".xml", 4, "text/xml", 8},
- {".xslt", 5, "application/xml", 15},
- {".ra", 3, "audio/x-pn-realaudio", 20},
- {".doc", 4, "application/msword", 19},
- {".exe", 4, "application/octet-stream", 24},
- {".zip", 4, "application/x-zip-compressed", 28},
- {".xls", 4, "application/excel", 17},
- {".tgz", 4, "application/x-tar-gz", 20},
- {".tar", 4, "application/x-tar", 17},
- {".gz", 3, "application/x-gunzip", 20},
- {".arj", 4, "application/x-arj-compressed", 28},
- {".rar", 4, "application/x-arj-compressed", 28},
- {".rtf", 4, "application/rtf", 15},
- {".pdf", 4, "application/pdf", 15},
- {".swf", 4, "application/x-shockwave-flash",29},
- {".mpg", 4, "video/mpeg", 10},
- {".mpeg", 5, "video/mpeg", 10},
- {".asf", 4, "video/x-ms-asf", 14},
- {".avi", 4, "video/x-msvideo", 15},
- {".bmp", 4, "image/bmp", 9},
- {NULL, 0, NULL, 0}
-};
-
-// Look at the "path" extension and figure what mime type it has.
-// Store mime type in the vector.
-static void get_mime_type(struct mg_context *ctx, const char *path,
- struct vec *vec) {
- struct vec ext_vec, mime_vec;
- const char *list, *ext;
- size_t i, path_len;
-
- path_len = strlen(path);
-
- // Scan user-defined mime types first, in case user wants to
- // override default mime types.
- list = ctx->config[EXTRA_MIME_TYPES];
- while ((list = next_option(list, &ext_vec, &mime_vec)) != NULL) {
- // ext now points to the path suffix
- ext = path + path_len - ext_vec.len;
- if (mg_strncasecmp(ext, ext_vec.ptr, ext_vec.len) == 0) {
- *vec = mime_vec;
- return;
- }
- }
-
- // Now scan built-in mime types
- for (i = 0; builtin_mime_types[i].extension != NULL; i++) {
- ext = path + (path_len - builtin_mime_types[i].ext_len);
- if (path_len > builtin_mime_types[i].ext_len &&
- mg_strcasecmp(ext, builtin_mime_types[i].extension) == 0) {
- vec->ptr = builtin_mime_types[i].mime_type;
- vec->len = builtin_mime_types[i].mime_type_len;
- return;
- }
- }
-
- // Nothing found. Fall back to "text/plain"
- vec->ptr = "text/plain";
- vec->len = 10;
-}
-
-#ifndef HAVE_MD5
-typedef struct MD5Context {
- uint32_t buf[4];
- uint32_t bits[2];
- unsigned char in[64];
-} MD5_CTX;
-
-#if __BYTE_ORDER == 1234
-#define byteReverse(buf, len) // Do nothing
-#else
-static void byteReverse(unsigned char *buf, unsigned longs) {
- uint32_t t;
- do {
- t = (uint32_t) ((unsigned) buf[3] << 8 | buf[2]) << 16 |
- ((unsigned) buf[1] << 8 | buf[0]);
- *(uint32_t *) buf = t;
- buf += 4;
- } while (--longs);
-}
-#endif
-
-#define F1(x, y, z) (z ^ (x & (y ^ z)))
-#define F2(x, y, z) F1(z, x, y)
-#define F3(x, y, z) (x ^ y ^ z)
-#define F4(x, y, z) (y ^ (x | ~z))
-
-#define MD5STEP(f, w, x, y, z, data, s) \
- ( w += f(x, y, z) + data, w = w<<s | w>>(32-s), w += x )
-
-// Start MD5 accumulation. Set bit count to 0 and buffer to mysterious
-// initialization constants.
-static void MD5Init(MD5_CTX *ctx) {
- ctx->buf[0] = 0x67452301;
- ctx->buf[1] = 0xefcdab89;
- ctx->buf[2] = 0x98badcfe;
- ctx->buf[3] = 0x10325476;
-
- ctx->bits[0] = 0;
- ctx->bits[1] = 0;
-}
-
-static void MD5Transform(uint32_t buf[4], uint32_t const in[16]) {
- register uint32_t a, b, c, d;
-
- a = buf[0];
- b = buf[1];
- c = buf[2];
- d = buf[3];
-
- MD5STEP(F1, a, b, c, d, in[0] + 0xd76aa478, 7);
- MD5STEP(F1, d, a, b, c, in[1] + 0xe8c7b756, 12);
- MD5STEP(F1, c, d, a, b, in[2] + 0x242070db, 17);
- MD5STEP(F1, b, c, d, a, in[3] + 0xc1bdceee, 22);
- MD5STEP(F1, a, b, c, d, in[4] + 0xf57c0faf, 7);
- MD5STEP(F1, d, a, b, c, in[5] + 0x4787c62a, 12);
- MD5STEP(F1, c, d, a, b, in[6] + 0xa8304613, 17);
- MD5STEP(F1, b, c, d, a, in[7] + 0xfd469501, 22);
- MD5STEP(F1, a, b, c, d, in[8] + 0x698098d8, 7);
- MD5STEP(F1, d, a, b, c, in[9] + 0x8b44f7af, 12);
- MD5STEP(F1, c, d, a, b, in[10] + 0xffff5bb1, 17);
- MD5STEP(F1, b, c, d, a, in[11] + 0x895cd7be, 22);
- MD5STEP(F1, a, b, c, d, in[12] + 0x6b901122, 7);
- MD5STEP(F1, d, a, b, c, in[13] + 0xfd987193, 12);
- MD5STEP(F1, c, d, a, b, in[14] + 0xa679438e, 17);
- MD5STEP(F1, b, c, d, a, in[15] + 0x49b40821, 22);
-
- MD5STEP(F2, a, b, c, d, in[1] + 0xf61e2562, 5);
- MD5STEP(F2, d, a, b, c, in[6] + 0xc040b340, 9);
- MD5STEP(F2, c, d, a, b, in[11] + 0x265e5a51, 14);
- MD5STEP(F2, b, c, d, a, in[0] + 0xe9b6c7aa, 20);
- MD5STEP(F2, a, b, c, d, in[5] + 0xd62f105d, 5);
- MD5STEP(F2, d, a, b, c, in[10] + 0x02441453, 9);
- MD5STEP(F2, c, d, a, b, in[15] + 0xd8a1e681, 14);
- MD5STEP(F2, b, c, d, a, in[4] + 0xe7d3fbc8, 20);
- MD5STEP(F2, a, b, c, d, in[9] + 0x21e1cde6, 5);
- MD5STEP(F2, d, a, b, c, in[14] + 0xc33707d6, 9);
- MD5STEP(F2, c, d, a, b, in[3] + 0xf4d50d87, 14);
- MD5STEP(F2, b, c, d, a, in[8] + 0x455a14ed, 20);
- MD5STEP(F2, a, b, c, d, in[13] + 0xa9e3e905, 5);
- MD5STEP(F2, d, a, b, c, in[2] + 0xfcefa3f8, 9);
- MD5STEP(F2, c, d, a, b, in[7] + 0x676f02d9, 14);
- MD5STEP(F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20);
-
- MD5STEP(F3, a, b, c, d, in[5] + 0xfffa3942, 4);
- MD5STEP(F3, d, a, b, c, in[8] + 0x8771f681, 11);
- MD5STEP(F3, c, d, a, b, in[11] + 0x6d9d6122, 16);
- MD5STEP(F3, b, c, d, a, in[14] + 0xfde5380c, 23);
- MD5STEP(F3, a, b, c, d, in[1] + 0xa4beea44, 4);
- MD5STEP(F3, d, a, b, c, in[4] + 0x4bdecfa9, 11);
- MD5STEP(F3, c, d, a, b, in[7] + 0xf6bb4b60, 16);
- MD5STEP(F3, b, c, d, a, in[10] + 0xbebfbc70, 23);
- MD5STEP(F3, a, b, c, d, in[13] + 0x289b7ec6, 4);
- MD5STEP(F3, d, a, b, c, in[0] + 0xeaa127fa, 11);
- MD5STEP(F3, c, d, a, b, in[3] + 0xd4ef3085, 16);
- MD5STEP(F3, b, c, d, a, in[6] + 0x04881d05, 23);
- MD5STEP(F3, a, b, c, d, in[9] + 0xd9d4d039, 4);
- MD5STEP(F3, d, a, b, c, in[12] + 0xe6db99e5, 11);
- MD5STEP(F3, c, d, a, b, in[15] + 0x1fa27cf8, 16);
- MD5STEP(F3, b, c, d, a, in[2] + 0xc4ac5665, 23);
-
- MD5STEP(F4, a, b, c, d, in[0] + 0xf4292244, 6);
- MD5STEP(F4, d, a, b, c, in[7] + 0x432aff97, 10);
- MD5STEP(F4, c, d, a, b, in[14] + 0xab9423a7, 15);
- MD5STEP(F4, b, c, d, a, in[5] + 0xfc93a039, 21);
- MD5STEP(F4, a, b, c, d, in[12] + 0x655b59c3, 6);
- MD5STEP(F4, d, a, b, c, in[3] + 0x8f0ccc92, 10);
- MD5STEP(F4, c, d, a, b, in[10] + 0xffeff47d, 15);
- MD5STEP(F4, b, c, d, a, in[1] + 0x85845dd1, 21);
- MD5STEP(F4, a, b, c, d, in[8] + 0x6fa87e4f, 6);
- MD5STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10);
- MD5STEP(F4, c, d, a, b, in[6] + 0xa3014314, 15);
- MD5STEP(F4, b, c, d, a, in[13] + 0x4e0811a1, 21);
- MD5STEP(F4, a, b, c, d, in[4] + 0xf7537e82, 6);
- MD5STEP(F4, d, a, b, c, in[11] + 0xbd3af235, 10);
- MD5STEP(F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15);
- MD5STEP(F4, b, c, d, a, in[9] + 0xeb86d391, 21);
-
- buf[0] += a;
- buf[1] += b;
- buf[2] += c;
- buf[3] += d;
-}
-
-static void MD5Update(MD5_CTX *ctx, unsigned char const *buf, unsigned len) {
- uint32_t t;
-
- t = ctx->bits[0];
- if ((ctx->bits[0] = t + ((uint32_t) len << 3)) < t)
- ctx->bits[1]++;
- ctx->bits[1] += len >> 29;
-
- t = (t >> 3) & 0x3f;
-
- if (t) {
- unsigned char *p = (unsigned char *) ctx->in + t;
-
- t = 64 - t;
- if (len < t) {
- memcpy(p, buf, len);
- return;
- }
- memcpy(p, buf, t);
- byteReverse(ctx->in, 16);
- MD5Transform(ctx->buf, (uint32_t *) ctx->in);
- buf += t;
- len -= t;
- }
-
- while (len >= 64) {
- memcpy(ctx->in, buf, 64);
- byteReverse(ctx->in, 16);
- MD5Transform(ctx->buf, (uint32_t *) ctx->in);
- buf += 64;
- len -= 64;
- }
-
- memcpy(ctx->in, buf, len);
-}
-
-static void MD5Final(unsigned char digest[16], MD5_CTX *ctx) {
- unsigned count;
- unsigned char *p;
-
- count = (ctx->bits[0] >> 3) & 0x3F;
-
- p = ctx->in + count;
- *p++ = 0x80;
- count = 64 - 1 - count;
- if (count < 8) {
- memset(p, 0, count);
- byteReverse(ctx->in, 16);
- MD5Transform(ctx->buf, (uint32_t *) ctx->in);
- memset(ctx->in, 0, 56);
- } else {
- memset(p, 0, count - 8);
- }
- byteReverse(ctx->in, 14);
-
- ((uint32_t *) ctx->in)[14] = ctx->bits[0];
- ((uint32_t *) ctx->in)[15] = ctx->bits[1];
-
- MD5Transform(ctx->buf, (uint32_t *) ctx->in);
- byteReverse((unsigned char *) ctx->buf, 4);
- memcpy(digest, ctx->buf, 16);
- memset((char *) ctx, 0, sizeof(ctx));
-}
-#endif // !HAVE_MD5
-
-// Stringify binary data. Output buffer must be twice as big as input,
-// because each byte takes 2 bytes in string representation
-static void bin2str(char *to, const unsigned char *p, size_t len) {
- static const char *hex = "0123456789abcdef";
-
- for (; len--; p++) {
- *to++ = hex[p[0] >> 4];
- *to++ = hex[p[0] & 0x0f];
- }
- *to = '\0';
-}
-
-// Return stringified MD5 hash for list of vectors. Buffer must be 33 bytes.
-void mg_md5(char *buf, ...) {
- unsigned char hash[16];
- const char *p;
- va_list ap;
- MD5_CTX ctx;
-
- MD5Init(&ctx);
-
- va_start(ap, buf);
- while ((p = va_arg(ap, const char *)) != NULL) {
- MD5Update(&ctx, (unsigned char *) p, (int) strlen(p));
- }
- va_end(ap);
-
- MD5Final(hash, &ctx);
- bin2str(buf, hash, sizeof(hash));
-}
-
-// Check the user's password, return 1 if OK
-static int check_password(const char *method, const char *ha1, const char *uri,
- const char *nonce, const char *nc, const char *cnonce,
- const char *qop, const char *response) {
- char ha2[32 + 1], expected_response[32 + 1];
-
- // NOTE(lsm): due to a bug in MSIE, we do not compare the URI
- // TODO(lsm): check for authentication timeout
- if (// strcmp(dig->uri, c->ouri) != 0 ||
- strlen(response) != 32
- // || now - strtoul(dig->nonce, NULL, 10) > 3600
- ) {
- return 0;
- }
-
- mg_md5(ha2, method, ":", uri, NULL);
- mg_md5(expected_response, ha1, ":", nonce, ":", nc,
- ":", cnonce, ":", qop, ":", ha2, NULL);
-
- return mg_strcasecmp(response, expected_response) == 0;
-}
-
-// Use the global passwords file, if specified by auth_gpass option,
-// or search for .htpasswd in the requested directory.
-static FILE *open_auth_file(struct mg_connection *conn, const char *path) {
- struct mg_context *ctx = conn->ctx;
- char name[PATH_MAX];
- const char *p, *e;
- struct mgstat st;
- FILE *fp;
-
- if (ctx->config[GLOBAL_PASSWORDS_FILE] != NULL) {
- // Use global passwords file
- fp = mg_fopen(ctx->config[GLOBAL_PASSWORDS_FILE], "r");
- if (fp == NULL)
- cry(fc(ctx), "fopen(%s): %s",
- ctx->config[GLOBAL_PASSWORDS_FILE], strerror(ERRNO));
- } else if (!mg_stat(path, &st) && st.is_directory) {
- (void) mg_snprintf(conn, name, sizeof(name), "%s%c%s",
- path, DIRSEP, PASSWORDS_FILE_NAME);
- fp = mg_fopen(name, "r");
- } else {
- // Try to find .htpasswd in requested directory.
- for (p = path, e = p + strlen(p) - 1; e > p; e--)
- if (IS_DIRSEP_CHAR(*e))
- break;
- (void) mg_snprintf(conn, name, sizeof(name), "%.*s%c%s",
- (int) (e - p), p, DIRSEP, PASSWORDS_FILE_NAME);
- fp = mg_fopen(name, "r");
- }
-
- return fp;
-}
-
-// Parsed Authorization header
-struct ah {
- char *user, *uri, *cnonce, *response, *qop, *nc, *nonce;
-};
-
-static int parse_auth_header(struct mg_connection *conn, char *buf,
- size_t buf_size, struct ah *ah) {
- char *name, *value, *s;
- const char *auth_header;
-
- if ((auth_header = mg_get_header(conn, "Authorization")) == NULL ||
- mg_strncasecmp(auth_header, "Digest ", 7) != 0) {
- return 0;
- }
-
- // Make modifiable copy of the auth header
- (void) mg_strlcpy(buf, auth_header + 7, buf_size);
-
- s = buf;
- (void) memset(ah, 0, sizeof(*ah));
-
- // Gobble initial spaces
- while (isspace(* (unsigned char *) s)) {
- s++;
- }
-
- // Parse authorization header
- for (;;) {
- name = skip(&s, "=");
- value = skip(&s, " ");
-
- // Handle commas: Digest username="a", realm="b", ...
- if (value[strlen(value) - 1] == ',') {
- value[strlen(value) - 1] = '\0';
- }
-
- // Trim double quotes around values
- if (*value == '"') {
- value++;
- value[strlen(value) - 1] = '\0';
- } else if (*value == '\0') {
- break;
- }
-
- if (!strcmp(name, "username")) {
- ah->user = value;
- } else if (!strcmp(name, "cnonce")) {
- ah->cnonce = value;
- } else if (!strcmp(name, "response")) {
- ah->response = value;
- } else if (!strcmp(name, "uri")) {
- ah->uri = value;
- } else if (!strcmp(name, "qop")) {
- ah->qop = value;
- } else if (!strcmp(name, "nc")) {
- ah->nc = value;
- } else if (!strcmp(name, "nonce")) {
- ah->nonce = value;
- }
- }
-
- // CGI needs it as REMOTE_USER
- if (ah->user != NULL) {
- conn->request_info.remote_user = mg_strdup(ah->user);
- }
-
- return 1;
-}
-
-// Authorize against the opened passwords file. Return 1 if authorized.
-static int authorize(struct mg_connection *conn, FILE *fp) {
- struct ah ah;
- char line[256], f_user[256], ha1[256], f_domain[256], buf[BUFSIZ];
-
- if (!parse_auth_header(conn, buf, sizeof(buf), &ah)) {
- return 0;
- }
-
- // Loop over passwords file
- while (fgets(line, sizeof(line), fp) != NULL) {
- if (sscanf(line, "%[^:]:%[^:]:%s", f_user, f_domain, ha1) != 3) {
- continue;
- }
-
- if (!strcmp(ah.user, f_user) &&
- !strcmp(conn->ctx->config[AUTHENTICATION_DOMAIN], f_domain))
- return check_password(
- conn->request_info.request_method,
- ha1, ah.uri, ah.nonce, ah.nc, ah.cnonce, ah.qop,
- ah.response);
- }
-
- return 0;
-}
-
-// Return 1 if request is authorised, 0 otherwise.
-static int check_authorization(struct mg_connection *conn, const char *path) {
- FILE *fp;
- char fname[PATH_MAX];
- struct vec uri_vec, filename_vec;
- const char *list;
- int authorized;
-
- fp = NULL;
- authorized = 1;
-
- list = conn->ctx->config[PROTECT_URI];
- while ((list = next_option(list, &uri_vec, &filename_vec)) != NULL) {
- if (!memcmp(conn->request_info.uri, uri_vec.ptr, uri_vec.len)) {
- (void) mg_snprintf(conn, fname, sizeof(fname), "%.*s",
- filename_vec.len, filename_vec.ptr);
- if ((fp = mg_fopen(fname, "r")) == NULL) {
- cry(conn, "%s: cannot open %s: %s", __func__, fname, strerror(errno));
- }
- break;
- }
- }
-
- if (fp == NULL) {
- fp = open_auth_file(conn, path);
- }
-
- if (fp != NULL) {
- authorized = authorize(conn, fp);
- (void) fclose(fp);
- }
-
- return authorized;
-}
-
-static void send_authorization_request(struct mg_connection *conn) {
- conn->request_info.status_code = 401;
- (void) mg_printf(conn,
- "HTTP/1.1 401 Unauthorized\r\n"
- "WWW-Authenticate: Digest qop=\"auth\", "
- "realm=\"%s\", nonce=\"%lu\"\r\n\r\n",
- conn->ctx->config[AUTHENTICATION_DOMAIN],
- (unsigned long) time(NULL));
-}
-
-static int is_authorized_for_put(struct mg_connection *conn) {
- FILE *fp;
- int ret = 0;
-
- fp = conn->ctx->config[PUT_DELETE_PASSWORDS_FILE] == NULL ? NULL :
- mg_fopen(conn->ctx->config[PUT_DELETE_PASSWORDS_FILE], "r");
-
- if (fp != NULL) {
- ret = authorize(conn, fp);
- (void) fclose(fp);
- }
-
- return ret;
-}
-
-int mg_modify_passwords_file(struct mg_context *ctx, const char *fname,
- const char *user, const char *pass) {
- int found;
- char line[512], u[512], d[512], ha1[33], tmp[PATH_MAX];
- const char *domain;
- FILE *fp, *fp2;
-
- found = 0;
- fp = fp2 = NULL;
- domain = ctx->config[AUTHENTICATION_DOMAIN];
-
- // Regard empty password as no password - remove user record.
- if (pass[0] == '\0') {
- pass = NULL;
- }
-
- (void) snprintf(tmp, sizeof(tmp), "%s.tmp", fname);
-
- // Create the file if does not exist
- if ((fp = mg_fopen(fname, "a+")) != NULL) {
- (void) fclose(fp);
- }
-
- // Open the given file and temporary file
- if ((fp = mg_fopen(fname, "r")) == NULL) {
- cry(fc(ctx), "Cannot open %s: %s", fname, strerror(errno));
- return 0;
- } else if ((fp2 = mg_fopen(tmp, "w+")) == NULL) {
- cry(fc(ctx), "Cannot open %s: %s", tmp, strerror(errno));
- return 0;
- }
-
- // Copy the stuff to temporary file
- while (fgets(line, sizeof(line), fp) != NULL) {
- if (sscanf(line, "%[^:]:%[^:]:%*s", u, d) != 2) {
- continue;
- }
-
- if (!strcmp(u, user) && !strcmp(d, domain)) {
- found++;
- if (pass != NULL) {
- mg_md5(ha1, user, ":", domain, ":", pass, NULL);
- fprintf(fp2, "%s:%s:%s\n", user, domain, ha1);
- }
- } else {
- (void) fprintf(fp2, "%s", line);
- }
- }
-
- // If new user, just add it
- if (!found && pass != NULL) {
- mg_md5(ha1, user, ":", domain, ":", pass, NULL);
- (void) fprintf(fp2, "%s:%s:%s\n", user, domain, ha1);
- }
-
- // Close files
- (void) fclose(fp);
- (void) fclose(fp2);
-
- // Put the temp file in place of real file
- (void) mg_remove(fname);
- (void) mg_rename(tmp, fname);
-
- return 1;
-}
-
-struct de {
- struct mg_connection *conn;
- char *file_name;
- struct mgstat st;
-};
-
-static void url_encode(const char *src, char *dst, size_t dst_len) {
- static const char *dont_escape = "._-$,;~()";
- static const char *hex = "0123456789abcdef";
- const char *end = dst + dst_len - 1;
-
- for (; *src != '\0' && dst < end; src++, dst++) {
- if (isalnum(*(unsigned char *) src) ||
- strchr(dont_escape, * (unsigned char *) src) != NULL) {
- *dst = *src;
- } else if (dst + 2 < end) {
- dst[0] = '%';
- dst[1] = hex[(* (unsigned char *) src) >> 4];
- dst[2] = hex[(* (unsigned char *) src) & 0xf];
- dst += 2;
- }
- }
-
- *dst = '\0';
-}
-
-static void print_dir_entry(struct de *de) {
- char size[64], mod[64], href[PATH_MAX];
-
- if (de->st.is_directory) {
- (void) mg_snprintf(de->conn, size, sizeof(size), "%s", "[DIRECTORY]");
- } else {
- // We use (signed) cast below because MSVC 6 compiler cannot
- // convert unsigned __int64 to double. Sigh.
- if (de->st.size < 1024) {
- (void) mg_snprintf(de->conn, size, sizeof(size),
- "%lu", (unsigned long) de->st.size);
- } else if (de->st.size < 1024 * 1024) {
- (void) mg_snprintf(de->conn, size, sizeof(size),
- "%.1fk", (double) de->st.size / 1024.0);
- } else if (de->st.size < 1024 * 1024 * 1024) {
- (void) mg_snprintf(de->conn, size, sizeof(size),
- "%.1fM", (double) de->st.size / 1048576);
- } else {
- (void) mg_snprintf(de->conn, size, sizeof(size),
- "%.1fG", (double) de->st.size / 1073741824);
- }
- }
- (void) strftime(mod, sizeof(mod), "%d-%b-%Y %H:%M", localtime(&de->st.mtime));
- url_encode(de->file_name, href, sizeof(href));
- de->conn->num_bytes_sent += mg_printf(de->conn,
- "<tr><td><a href=\"%s%s%s\">%s%s</a></td>"
- "<td> %s</td><td> %s</td></tr>\n",
- de->conn->request_info.uri, href, de->st.is_directory ? "/" : "",
- de->file_name, de->st.is_directory ? "/" : "", mod, size);
-}
-
-// This function is called from send_directory() and used for
-// sorting directory entries by size, or name, or modification time.
-// On windows, __cdecl specification is needed in case if project is built
-// with __stdcall convention. qsort always requires __cdels callback.
-static int WINCDECL compare_dir_entries(const void *p1, const void *p2) {
- const struct de *a = (struct de *) p1, *b = (struct de *) p2;
- const char *query_string = a->conn->request_info.query_string;
- int cmp_result = 0;
-
- if (query_string == NULL) {
- query_string = "na";
- }
-
- if (a->st.is_directory && !b->st.is_directory) {
- return -1; // Always put directories on top
- } else if (!a->st.is_directory && b->st.is_directory) {
- return 1; // Always put directories on top
- } else if (*query_string == 'n') {
- cmp_result = strcmp(a->file_name, b->file_name);
- } else if (*query_string == 's') {
- cmp_result = a->st.size == b->st.size ? 0 :
- a->st.size > b->st.size ? 1 : -1;
- } else if (*query_string == 'd') {
- cmp_result = a->st.mtime == b->st.mtime ? 0 :
- a->st.mtime > b->st.mtime ? 1 : -1;
- }
-
- return query_string[1] == 'd' ? -cmp_result : cmp_result;
-}
-
-static void handle_directory_request(struct mg_connection *conn,
- const char *dir) {
- struct dirent *dp;
- DIR *dirp;
- struct de *entries = NULL;
- char path[PATH_MAX];
- int i, sort_direction, num_entries = 0, arr_size = 128;
-
- if ((dirp = opendir(dir)) == NULL) {
- send_http_error(conn, 500, "Cannot open directory",
- "Error: opendir(%s): %s", path, strerror(ERRNO));
- return;
- }
-
- (void) mg_printf(conn, "%s",
- "HTTP/1.1 200 OK\r\n"
- "Connection: close\r\n"
- "Content-Type: text/html; charset=utf-8\r\n\r\n");
-
- sort_direction = conn->request_info.query_string != NULL &&
- conn->request_info.query_string[1] == 'd' ? 'a' : 'd';
-
- while ((dp = readdir(dirp)) != NULL) {
-
- // Do not show current dir and passwords file
- if (!strcmp(dp->d_name, ".") ||
- !strcmp(dp->d_name, "..") ||
- !strcmp(dp->d_name, PASSWORDS_FILE_NAME))
- continue;
-
- if (entries == NULL || num_entries >= arr_size) {
- arr_size *= 2;
- entries = (struct de *) realloc(entries,
- arr_size * sizeof(entries[0]));
- }
-
- if (entries == NULL) {
- send_http_error(conn, 500, "Cannot open directory",
- "%s", "Error: cannot allocate memory");
- return;
- }
-
- mg_snprintf(conn, path, sizeof(path), "%s%c%s", dir, DIRSEP, dp->d_name);
-
- // If we don't memset stat structure to zero, mtime will have
- // garbage and strftime() will segfault later on in
- // print_dir_entry(). memset is required only if mg_stat()
- // fails. For more details, see
- // http://code.google.com/p/mongoose/issues/detail?id=79
- if (mg_stat(path, &entries[num_entries].st) != 0) {
- memset(&entries[num_entries].st, 0, sizeof(entries[num_entries].st));
- }
-
- entries[num_entries].conn = conn;
- entries[num_entries].file_name = mg_strdup(dp->d_name);
- num_entries++;
- }
- (void) closedir(dirp);
-
- conn->num_bytes_sent += mg_printf(conn,
- "<html><head><title>Index of %s</title>"
- "<style>th {text-align: left;}</style></head>"
- "<body><h1>Index of %s</h1><pre><table cellpadding=\"0\">"
- "<tr><th><a href=\"?n%c\">Name</a></th>"
- "<th><a href=\"?d%c\">Modified</a></th>"
- "<th><a href=\"?s%c\">Size</a></th></tr>"
- "<tr><td colspan=\"3\"><hr></td></tr>",
- conn->request_info.uri, conn->request_info.uri,
- sort_direction, sort_direction, sort_direction);
-
- // Print first entry - link to a parent directory
- conn->num_bytes_sent += mg_printf(conn,
- "<tr><td><a href=\"%s%s\">%s</a></td>"
- "<td> %s</td><td> %s</td></tr>\n",
- conn->request_info.uri, "..", "Parent directory", "-", "-");
-
- // Sort and print directory entries
- qsort(entries, num_entries, sizeof(entries[0]), compare_dir_entries);
- for (i = 0; i < num_entries; i++) {
- print_dir_entry(&entries[i]);
- free(entries[i].file_name);
- }
- free(entries);
-
- conn->num_bytes_sent += mg_printf(conn, "%s", "</table></body></html>");
- conn->request_info.status_code = 200;
-}
-
-// Send len bytes from the opened file to the client.
-static void send_file_data(struct mg_connection *conn, FILE *fp, int64_t len) {
- char buf[BUFSIZ];
- int to_read, num_read, num_written;
-
- while (len > 0) {
- // Calculate how much to read from the file in the buffer
- to_read = sizeof(buf);
- if ((int64_t) to_read > len)
- to_read = (int) len;
-
- // Read from file, exit the loop on error
- if ((num_read = fread(buf, 1, to_read, fp)) == 0)
- break;
-
- // Send read bytes to the client, exit the loop on error
- if ((num_written = mg_write(conn, buf, num_read)) != num_read)
- break;
-
- // Both read and were successful, adjust counters
- conn->num_bytes_sent += num_written;
- len -= num_written;
- }
-}
-
-static int parse_range_header(const char *header, int64_t *a, int64_t *b) {
- return sscanf(header, "bytes=%" INT64_FMT "-%" INT64_FMT, a, b);
-}
-
-static void handle_file_request(struct mg_connection *conn, const char *path,
- struct mgstat *stp) {
- char date[64], lm[64], etag[64], range[64];
- const char *fmt = "%a, %d %b %Y %H:%M:%S %Z", *msg = "OK", *hdr;
- time_t curtime = time(NULL);
- int64_t cl, r1, r2;
- struct vec mime_vec;
- FILE *fp;
- int n;
-
- get_mime_type(conn->ctx, path, &mime_vec);
- cl = stp->size;
- conn->request_info.status_code = 200;
- range[0] = '\0';
-
- if ((fp = mg_fopen(path, "rb")) == NULL) {
- send_http_error(conn, 500, http_500_error,
- "fopen(%s): %s", path, strerror(ERRNO));
- return;
- }
- set_close_on_exec(fileno(fp));
-
- // If Range: header specified, act accordingly
- r1 = r2 = 0;
- hdr = mg_get_header(conn, "Range");
- if (hdr != NULL && (n = parse_range_header(hdr, &r1, &r2)) > 0) {
- conn->request_info.status_code = 206;
- (void) fseeko(fp, (off_t) r1, SEEK_SET);
- cl = n == 2 ? r2 - r1 + 1: cl - r1;
- (void) mg_snprintf(conn, range, sizeof(range),
- "Content-Range: bytes "
- "%" INT64_FMT "-%"
- INT64_FMT "/%" INT64_FMT "\r\n",
- r1, r1 + cl - 1, stp->size);
- msg = "Partial Content";
- }
-
- // Prepare Etag, Date, Last-Modified headers
- (void) strftime(date, sizeof(date), fmt, localtime(&curtime));
- (void) strftime(lm, sizeof(lm), fmt, localtime(&stp->mtime));
- (void) mg_snprintf(conn, etag, sizeof(etag), "%lx.%lx",
- (unsigned long) stp->mtime, (unsigned long) stp->size);
-
- (void) mg_printf(conn,
- "HTTP/1.1 %d %s\r\n"
- "Date: %s\r\n"
- "Last-Modified: %s\r\n"
- "Etag: \"%s\"\r\n"
- "Content-Type: %.*s\r\n"
- "Content-Length: %" INT64_FMT "\r\n"
- "Connection: %s\r\n"
- "Accept-Ranges: bytes\r\n"
- "%s\r\n",
- conn->request_info.status_code, msg, date, lm, etag,
- mime_vec.len, mime_vec.ptr, cl, suggest_connection_header(conn), range);
-
- if (strcmp(conn->request_info.request_method, "HEAD") != 0) {
- send_file_data(conn, fp, cl);
- }
- (void) fclose(fp);
-}
-
-// Parse HTTP headers from the given buffer, advance buffer to the point
-// where parsing stopped.
-static void parse_http_headers(char **buf, struct mg_request_info *ri) {
- int i;
-
- for (i = 0; i < (int) ARRAY_SIZE(ri->http_headers); i++) {
- ri->http_headers[i].name = skip(buf, ": ");
- ri->http_headers[i].value = skip(buf, "\r\n");
- if (ri->http_headers[i].name[0] == '\0')
- break;
- ri->num_headers = i + 1;
- }
-}
-
-static int is_valid_http_method(const char *method) {
- return !strcmp(method, "GET") || !strcmp(method, "POST") ||
- !strcmp(method, "HEAD") || !strcmp(method, "CONNECT") ||
- !strcmp(method, "PUT") || !strcmp(method, "DELETE");
-}
-
-// Parse HTTP request, fill in mg_request_info structure.
-static int parse_http_request(char *buf, struct mg_request_info *ri) {
- int status = 0;
-
- // RFC says that all initial whitespaces should be ingored
- while (*buf != '\0' && isspace(* (unsigned char *) buf)) {
- buf++;
- }
-
- ri->request_method = skip(&buf, " ");
- ri->uri = skip(&buf, " ");
- ri->http_version = skip(&buf, "\r\n");
-
- if (is_valid_http_method(ri->request_method) &&
- strncmp(ri->http_version, "HTTP/", 5) == 0) {
- ri->http_version += 5; /* Skip "HTTP/" */
- parse_http_headers(&buf, ri);
- status = 1;
- }
-
- return status;
-}
-
-// Keep reading the input (either opened file descriptor fd, or socket sock,
-// or SSL descriptor ssl) into buffer buf, until \r\n\r\n appears in the
-// buffer (which marks the end of HTTP request). Buffer buf may already
-// have some data. The length of the data is stored in nread.
-// Upon every read operation, increase nread by the number of bytes read.
-static int read_request(FILE *fp, SOCKET sock, SSL *ssl, char *buf, int bufsiz,
- int *nread) {
- int n, request_len;
-
- request_len = 0;
- while (*nread < bufsiz && request_len == 0) {
- n = pull(fp, sock, ssl, buf + *nread, bufsiz - *nread);
- if (n <= 0) {
- break;
- } else {
- *nread += n;
- request_len = get_request_len(buf, *nread);
- }
- }
-
- return request_len;
-}
-
-// For given directory path, substitute it to valid index file.
-// Return 0 if index file has been found, -1 if not found.
-// If the file is found, it's stats is returned in stp.
-static int substitute_index_file(struct mg_connection *conn, char *path,
- size_t path_len, struct mgstat *stp) {
- const char *list = conn->ctx->config[INDEX_FILES];
- struct mgstat st;
- struct vec filename_vec;
- size_t n = strlen(path);
- int found = 0;
-
- // The 'path' given to us points to the directory. Remove all trailing
- // directory separator characters from the end of the path, and
- // then append single directory separator character.
- while (n > 0 && IS_DIRSEP_CHAR(path[n - 1])) {
- n--;
- }
- path[n] = DIRSEP;
-
- // Traverse index files list. For each entry, append it to the given
- // path and see if the file exists. If it exists, break the loop
- while ((list = next_option(list, &filename_vec, NULL)) != NULL) {
-
- // Ignore too long entries that may overflow path buffer
- if (filename_vec.len > path_len - n)
- continue;
-
- // Prepare full path to the index file
- (void) mg_strlcpy(path + n + 1, filename_vec.ptr, filename_vec.len + 1);
-
- // Does it exist?
- if (mg_stat(path, &st) == 0) {
- // Yes it does, break the loop
- *stp = st;
- found = 1;
- break;
- }
- }
-
- // If no index file exists, restore directory path
- if (!found) {
- path[n] = '\0';
- }
-
- return found;
-}
-
-// Return True if we should reply 304 Not Modified.
-static int is_not_modified(const struct mg_connection *conn,
- const struct mgstat *stp) {
- const char *ims = mg_get_header(conn, "If-Modified-Since");
- return ims != NULL && stp->mtime <= parse_date_string(ims);
-}
-
-static int forward_body_data(struct mg_connection *conn, FILE *fp,
- SOCKET sock, SSL *ssl) {
- const char *expect, *buffered;
- char buf[BUFSIZ];
- int to_read, nread, buffered_len, success = 0;
-
- expect = mg_get_header(conn, "Expect");
- assert(fp != NULL);
-
- if (conn->content_len == -1) {
- send_http_error(conn, 411, "Length Required", "");
- } else if (expect != NULL && mg_strcasecmp(expect, "100-continue")) {
- send_http_error(conn, 417, "Expectation Failed", "");
- } else {
- if (expect != NULL) {
- (void) mg_printf(conn, "%s", "HTTP/1.1 100 Continue\r\n\r\n");
- }
-
- buffered = conn->buf + conn->request_len;
- buffered_len = conn->data_len - conn->request_len;
- assert(buffered_len >= 0);
- assert(conn->consumed_content == 0);
-
- if (buffered_len > 0) {
- if ((int64_t) buffered_len > conn->content_len) {
- buffered_len = (int) conn->content_len;
- }
- push(fp, sock, ssl, buffered, (int64_t) buffered_len);
- conn->consumed_content += buffered_len;
- }
-
- while (conn->consumed_content < conn->content_len) {
- to_read = sizeof(buf);
- if ((int64_t) to_read > conn->content_len - conn->consumed_content) {
- to_read = (int) (conn->content_len - conn->consumed_content);
- }
- nread = pull(NULL, conn->client.sock, conn->ssl, buf, to_read);
- if (nread <= 0 || push(fp, sock, ssl, buf, nread) != nread) {
- break;
- }
- conn->consumed_content += nread;
- }
-
- if (conn->consumed_content == conn->content_len) {
- success = 1;
- }
-
- // Each error code path in this function must send an error
- if (!success) {
- send_http_error(conn, 577, http_500_error, "");
- }
- }
-
- return success;
-}
-
-#if !defined(NO_CGI)
-// This structure helps to create an environment for the spawned CGI program.
-// Environment is an array of "VARIABLE=VALUE\0" ASCIIZ strings,
-// last element must be NULL.
-// However, on Windows there is a requirement that all these VARIABLE=VALUE\0
-// strings must reside in a contiguous buffer. The end of the buffer is
-// marked by two '\0' characters.
-// We satisfy both worlds: we create an envp array (which is vars), all
-// entries are actually pointers inside buf.
-struct cgi_env_block {
- struct mg_connection *conn;
- char buf[CGI_ENVIRONMENT_SIZE]; // Environment buffer
- int len; // Space taken
- char *vars[MAX_CGI_ENVIR_VARS]; // char **envp
- int nvars; // Number of variables
-};
-
-// Append VARIABLE=VALUE\0 string to the buffer, and add a respective
-// pointer into the vars array.
-static char *addenv(struct cgi_env_block *block, const char *fmt, ...) {
- int n, space;
- char *added;
- va_list ap;
-
- // Calculate how much space is left in the buffer
- space = sizeof(block->buf) - block->len - 2;
- assert(space >= 0);
-
- // Make a pointer to the free space int the buffer
- added = block->buf + block->len;
-
- // Copy VARIABLE=VALUE\0 string into the free space
- va_start(ap, fmt);
- n = mg_vsnprintf(block->conn, added, (size_t) space, fmt, ap);
- va_end(ap);
-
- // Make sure we do not overflow buffer and the envp array
- if (n > 0 && n < space &&
- block->nvars < (int) ARRAY_SIZE(block->vars) - 2) {
- // Append a pointer to the added string into the envp array
- block->vars[block->nvars++] = block->buf + block->len;
- // Bump up used length counter. Include \0 terminator
- block->len += n + 1;
- }
-
- return added;
-}
-
-static void prepare_cgi_environment(struct mg_connection *conn,
- const char *prog,
- struct cgi_env_block *blk) {
- const char *s, *slash;
- struct vec var_vec, root;
- char *p;
- int i;
-
- blk->len = blk->nvars = 0;
- blk->conn = conn;
-
- get_document_root(conn, &root);
-
- addenv(blk, "SERVER_NAME=%s", conn->ctx->config[AUTHENTICATION_DOMAIN]);
- addenv(blk, "SERVER_ROOT=%.*s", root.len, root.ptr);
- addenv(blk, "DOCUMENT_ROOT=%.*s", root.len, root.ptr);
-
- // Prepare the environment block
- addenv(blk, "%s", "GATEWAY_INTERFACE=CGI/1.1");
- addenv(blk, "%s", "SERVER_PROTOCOL=HTTP/1.1");
- addenv(blk, "%s", "REDIRECT_STATUS=200"); // For PHP
- addenv(blk, "SERVER_PORT=%d", ntohs(conn->client.lsa.u.sin.sin_port));
- addenv(blk, "REQUEST_METHOD=%s", conn->request_info.request_method);
- addenv(blk, "REMOTE_ADDR=%s",
- inet_ntoa(conn->client.rsa.u.sin.sin_addr));
- addenv(blk, "REMOTE_PORT=%d", conn->request_info.remote_port);
- addenv(blk, "REQUEST_URI=%s", conn->request_info.uri);
-
- // SCRIPT_NAME
- assert(conn->request_info.uri[0] == '/');
- slash = strrchr(conn->request_info.uri, '/');
- if ((s = strrchr(prog, '/')) == NULL)
- s = prog;
- addenv(blk, "SCRIPT_NAME=%.*s%s", slash - conn->request_info.uri,
- conn->request_info.uri, s);
-
[... 5362 lines stripped ...]