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Posted to commits@celix.apache.org by ab...@apache.org on 2013/10/01 12:03:51 UTC
svn commit: r1528026 [2/3] - in /incubator/celix/trunk/remote_services:
discovery_bonjour/private/src/ example_proxy/private/src/
remote_service_admin/ remote_service_admin/private/include/
remote_service_admin/private/src/
Added: incubator/celix/trunk/remote_services/remote_service_admin/private/src/civetweb.c
URL: http://svn.apache.org/viewvc/incubator/celix/trunk/remote_services/remote_service_admin/private/src/civetweb.c?rev=1528026&view=auto
==============================================================================
--- incubator/celix/trunk/remote_services/remote_service_admin/private/src/civetweb.c (added)
+++ incubator/celix/trunk/remote_services/remote_service_admin/private/src/civetweb.c Tue Oct 1 10:03:50 2013
@@ -0,0 +1,5972 @@
+// Copyright (c) 2004-2013 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)
+#if !defined(_CRT_SECURE_NO_WARNINGS)
+#define _CRT_SECURE_NO_WARNINGS // Disable deprecation warning in VS2005
+#endif
+#else
+#ifdef __linux__
+#define _XOPEN_SOURCE 600 // For flockfile() on Linux
+#endif
+#define _LARGEFILE_SOURCE // Enable 64-bit file offsets
+#define __STDC_FORMAT_MACROS // <inttypes.h> wants this for C++
+#define __STDC_LIMIT_MACROS // C++ wants that for INT64_MAX
+#endif
+
+#if defined (_MSC_VER)
+// conditional expression is constant: introduced by FD_SET(..)
+#pragma warning (disable : 4127)
+// non-constant aggregate initializer: issued due to missing C99 support
+#pragma warning (disable : 4204)
+#endif
+
+// Disable WIN32_LEAN_AND_MEAN.
+// This makes windows.h always include winsock2.h
+#ifdef WIN32_LEAN_AND_MEAN
+#undef WIN32_LEAN_AND_MEAN
+#endif
+
+#if defined(__SYMBIAN32__)
+#define NO_SSL // SSL is not supported
+#define NO_CGI // CGI is not supported
+#define PATH_MAX FILENAME_MAX
+#endif // __SYMBIAN32__
+
+#ifndef IGNORE_UNUSED_RESULT
+#define IGNORE_UNUSED_RESULT(a) (void)((a) && 1)
+#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) && !defined(__SYMBIAN32__) // Windows specific
+#undef _WIN32_WINNT
+#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
+#define NO_CGI // WinCE has no pipes
+
+typedef long off_t;
+
+#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__ __FILE__ ":" STR(__LINE__)
+#define strtoull(x, y, z) (unsigned __int64) _atoi64(x)
+#define strtoll(x, y, z) _atoi64(x)
+#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 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 mg_sleep(x) Sleep(x)
+
+#define pipe(x) _pipe(x, MG_BUF_LEN, _O_BINARY)
+#ifndef popen
+#define popen(x, y) _popen(x, y)
+#endif
+#ifndef pclose
+#define pclose(x) _pclose(x)
+#endif
+#define close(x) _close(x)
+#define dlsym(x,y) GetProcAddress((HINSTANCE) (x), (y))
+#define RTLD_LAZY 0
+#define fseeko(x, y, z) _lseeki64(_fileno(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) EnterCriticalSection(&global_log_file_lock)
+#define funlockfile(x) LeaveCriticalSection(&global_log_file_lock)
+#define sleep(x) Sleep((x) * 1000)
+#define rmdir(x) _rmdir(x)
+
+#if !defined(va_copy)
+#define va_copy(x, y) x = y
+#endif // !va_copy MINGW #defines va_copy
+
+#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 HANDLE pthread_t;
+#define pid_t HANDLE // MINGW typedefs pid_t to int. Using #define here.
+
+static int pthread_mutex_lock(pthread_mutex_t *);
+static int pthread_mutex_unlock(pthread_mutex_t *);
+static void to_unicode(const char *path, wchar_t *wbuf, size_t wbuf_len);
+struct file;
+static char *mg_fgets(char *buf, size_t size, struct file *filep, char **p);
+
+#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;
+
+#ifndef HAVE_POLL
+struct pollfd {
+ SOCKET fd;
+ short events;
+ short revents;
+};
+#define POLLIN 1
+#endif
+
+
+// Mark required libraries
+#ifdef _MSC_VER
+#pragma comment(lib, "Ws2_32.lib")
+#endif
+
+#else // UNIX specific
+#include <sys/wait.h>
+#include <sys/socket.h>
+#include <sys/poll.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>
+#if !defined(NO_SSL_DL) && !defined(NO_SSL)
+#include <dlfcn.h>
+#endif
+#include <pthread.h>
+#if defined(__MACH__)
+#define SSL_LIB "libssl.dylib"
+#define CRYPTO_LIB "libcrypto.dylib"
+#else
+#if !defined(SSL_LIB)
+#define SSL_LIB "libssl.so"
+#endif
+#if !defined(CRYPTO_LIB)
+#define CRYPTO_LIB "libcrypto.so"
+#endif
+#endif
+#ifndef O_BINARY
+#define O_BINARY 0
+#endif // O_BINARY
+#define closesocket(a) close(a)
+#define mg_mkdir(x, y) mkdir(x, y)
+#define mg_remove(x) remove(x)
+#define mg_sleep(x) usleep((x) * 1000)
+#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 "civetweb.h"
+
+#define CIVETWEB_VERSION "1.5"
+#define PASSWORDS_FILE_NAME ".htpasswd"
+#define CGI_ENVIRONMENT_SIZE 4096
+#define MAX_CGI_ENVIR_VARS 64
+#define MG_BUF_LEN 8192
+#ifndef MAX_REQUEST_SIZE
+#define MAX_REQUEST_SIZE 16384
+#endif
+#define ARRAY_SIZE(array) (sizeof(array) / sizeof(array[0]))
+
+#ifdef _WIN32
+static CRITICAL_SECTION global_log_file_lock;
+static DWORD pthread_self(void)
+{
+ return GetCurrentThreadId();
+}
+#endif // _WIN32
+
+#define MD5_STATIC static
+#include "md5.inl"
+
+#ifdef DEBUG_TRACE
+#undef DEBUG_TRACE
+#define DEBUG_TRACE(x)
+#else
+#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
+#endif // DEBUG_TRACE
+
+// Darwin prior to 7.0 and Win32 do not have socklen_t
+#ifdef NO_SOCKLEN_T
+typedef int socklen_t;
+#endif // NO_SOCKLEN_T
+#define _DARWIN_UNLIMITED_SELECT
+
+#define IP_ADDR_STR_LEN 50 // IPv6 hex string is 46 chars
+
+#if !defined(MSG_NOSIGNAL)
+#define MSG_NOSIGNAL 0
+#endif
+
+#if !defined(SOMAXCONN)
+#define SOMAXCONN 100
+#endif
+
+#if !defined(PATH_MAX)
+#define PATH_MAX 4096
+#endif
+
+// Size of the accepted socket queue
+#if !defined(MGSQLEN)
+#define MGSQLEN 20
+#endif
+
+static const char *http_500_error = "Internal Server Error";
+
+#if defined(NO_SSL_DL)
+#include <openssl/ssl.h>
+#include <openssl/err.h>
+#else
+// SSL loaded dynamically from DLL.
+// I put the prototypes here to be independent from OpenSSL source installation.
+typedef struct ssl_st SSL;
+typedef struct ssl_method_st SSL_METHOD;
+typedef struct ssl_ctx_st SSL_CTX;
+
+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].ptr)
+#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_t)) 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 SSLv23_client_method (* (SSL_METHOD * (*)(void)) ssl_sw[17].ptr)
+#define SSL_pending (* (int (*)(SSL *)) ssl_sw[18].ptr)
+#define SSL_CTX_set_verify (* (void (*)(SSL_CTX *, int, int)) ssl_sw[19].ptr)
+#define SSL_shutdown (* (int (*)(SSL *)) ssl_sw[20].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)) crypto_sw[3].ptr)
+#define ERR_error_string (* (char * (*)(unsigned long,char *)) crypto_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},
+ {"SSLv23_client_method", NULL},
+ {"SSL_pending", NULL},
+ {"SSL_CTX_set_verify", NULL},
+ {"SSL_shutdown", NULL},
+ {NULL, NULL}
+};
+
+// Similar array as ssl_sw. These functions could be located in different lib.
+#if !defined(NO_SSL)
+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
+#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.
+union usa {
+ struct sockaddr sa;
+ struct sockaddr_in sin;
+#if defined(USE_IPV6)
+ struct sockaddr_in6 sin6;
+#endif
+};
+
+// Describes a string (chunk of memory).
+struct vec {
+ const char *ptr;
+ size_t len;
+};
+
+struct file {
+ int is_directory;
+ time_t modification_time;
+ int64_t size;
+ FILE *fp;
+ const char *membuf; // Non-NULL if file data is in memory
+ // set to 1 if the content is gzipped
+ // in which case we need a content-encoding: gzip header
+ int gzipped;
+};
+#define STRUCT_FILE_INITIALIZER {0, 0, 0, NULL, NULL, 0}
+
+// Describes listening socket, or socket which was accept()-ed by the master
+// thread and queued for future handling by the worker thread.
+struct socket {
+ SOCKET sock; // Listening socket
+ union usa lsa; // Local socket address
+ union usa rsa; // Remote socket address
+ unsigned is_ssl:1; // Is port SSL-ed
+ unsigned ssl_redir:1; // Is port supposed to redirect everything to SSL port
+};
+
+// NOTE(lsm): this enum shoulds be in sync with the config_options below.
+enum {
+ CGI_EXTENSIONS, CGI_ENVIRONMENT, PUT_DELETE_PASSWORDS_FILE, CGI_INTERPRETER,
+ PROTECT_URI, AUTHENTICATION_DOMAIN, SSI_EXTENSIONS, THROTTLE,
+ ACCESS_LOG_FILE, ENABLE_DIRECTORY_LISTING, ERROR_LOG_FILE,
+ GLOBAL_PASSWORDS_FILE, INDEX_FILES, ENABLE_KEEP_ALIVE, ACCESS_CONTROL_LIST,
+ EXTRA_MIME_TYPES, LISTENING_PORTS, DOCUMENT_ROOT, SSL_CERTIFICATE,
+ NUM_THREADS, RUN_AS_USER, REWRITE, HIDE_FILES, REQUEST_TIMEOUT,
+ NUM_OPTIONS
+};
+
+static const char *config_options[] = {
+ "cgi_pattern", "**.cgi$|**.pl$|**.php$",
+ "cgi_environment", NULL,
+ "put_delete_auth_file", NULL,
+ "cgi_interpreter", NULL,
+ "protect_uri", NULL,
+ "authentication_domain", "mydomain.com",
+ "ssi_pattern", "**.shtml$|**.shtm$",
+ "throttle", NULL,
+ "access_log_file", NULL,
+ "enable_directory_listing", "yes",
+ "error_log_file", NULL,
+ "global_auth_file", NULL,
+ "index_files",
+ "index.html,index.htm,index.cgi,index.shtml,index.php,index.lp",
+ "enable_keep_alive", "no",
+ "access_control_list", NULL,
+ "extra_mime_types", NULL,
+ "listening_ports", "8080",
+ "document_root", NULL,
+ "ssl_certificate", NULL,
+ "num_threads", "50",
+ "run_as_user", NULL,
+ "url_rewrite_patterns", NULL,
+ "hide_files_patterns", NULL,
+ "request_timeout_ms", "30000",
+ NULL
+};
+
+struct mg_request_handler_info {
+ char *uri;
+ size_t uri_len;
+ mg_request_handler handler;
+ void *cbdata;
+ struct mg_request_handler_info *next;
+};
+
+struct mg_context {
+ volatile int stop_flag; // Should we stop event loop
+ void *ssllib_dll_handle; // Store the ssl library handle.
+ void *cryptolib_dll_handle; // Store the crypto library handle.
+ SSL_CTX *ssl_ctx; // SSL context
+ char *config[NUM_OPTIONS]; // Civetweb configuration parameters
+ struct mg_callbacks callbacks; // User-defined callback function
+ void *user_data; // User-defined data
+
+ struct socket *listening_sockets;
+ int num_listening_sockets;
+
+ volatile 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[MGSQLEN]; // Accepted sockets
+ volatile int sq_head; // Head of the socket queue
+ volatile int sq_tail; // Tail of the socket queue
+ pthread_cond_t sq_full; // Signaled when socket is produced
+ pthread_cond_t sq_empty; // Signaled when socket is consumed
+ pthread_t masterthreadid; // The master thread ID.
+ int workerthreadcount; // The amount of worker threads.
+ pthread_t *workerthreadids;// The worker thread IDs.
+
+ // linked list of uri handlers
+ struct mg_request_handler_info *request_handlers;
+};
+
+struct mg_connection {
+ struct mg_request_info request_info;
+ struct mg_context *ctx;
+ SSL *ssl; // SSL descriptor
+ SSL_CTX *client_ssl_ctx; // SSL context for client connections
+ struct socket client; // Connected client
+ time_t birth_time; // Time when request was received
+ 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 have been read
+ char *buf; // Buffer for received data
+ char *path_info; // PATH_INFO part of the URL
+ int must_close; // 1 if connection must be closed
+ 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
+ int status_code; // HTTP reply status code, e.g. 200
+ int throttle; // Throttling, bytes/sec. <= 0 means no throttle
+ time_t last_throttle_time; // Last time throttled data was sent
+ int64_t last_throttle_bytes;// Bytes sent this second
+ pthread_mutex_t mutex; // Used by mg_lock/mg_unlock to ensure atomic transmissions for websockets
+};
+
+// Directory entry
+struct de {
+ struct mg_connection *conn;
+ char *file_name;
+ struct file file;
+};
+
+const char **mg_get_valid_option_names(void)
+{
+ return config_options;
+}
+
+static int is_file_in_memory(struct mg_connection *conn, const char *path,
+ struct file *filep)
+{
+ size_t size = 0;
+ if ((filep->membuf = conn->ctx->callbacks.open_file == NULL ? NULL :
+ conn->ctx->callbacks.open_file(conn, path, &size)) != NULL) {
+ // NOTE: override filep->size only on success. Otherwise, it might break
+ // constructs like if (!mg_stat() || !mg_fopen()) ...
+ filep->size = size;
+ }
+ return filep->membuf != NULL;
+}
+
+static int is_file_opened(const struct file *filep)
+{
+ return filep->membuf != NULL || filep->fp != NULL;
+}
+
+static int mg_fopen(struct mg_connection *conn, const char *path,
+ const char *mode, struct file *filep)
+{
+ if (!is_file_in_memory(conn, path, filep)) {
+#ifdef _WIN32
+ wchar_t wbuf[PATH_MAX], wmode[20];
+ to_unicode(path, wbuf, ARRAY_SIZE(wbuf));
+ MultiByteToWideChar(CP_UTF8, 0, mode, -1, wmode, ARRAY_SIZE(wmode));
+ filep->fp = _wfopen(wbuf, wmode);
+#else
+ filep->fp = fopen(path, mode);
+#endif
+ }
+
+ return is_file_opened(filep);
+}
+
+static void mg_fclose(struct file *filep)
+{
+ if (filep != NULL && filep->fp != NULL) {
+ fclose(filep->fp);
+ }
+}
+
+static int get_option_index(const char *name)
+{
+ int i;
+
+ for (i = 0; config_options[i * 2] != NULL; i++) {
+ if (strcmp(config_options[i * 2], name) == 0) {
+ return i;
+ }
+ }
+ 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];
+ }
+}
+
+static void sockaddr_to_string(char *buf, size_t len,
+ const union usa *usa)
+{
+ buf[0] = '\0';
+#if defined(USE_IPV6)
+ inet_ntop(usa->sa.sa_family, usa->sa.sa_family == AF_INET ?
+ (void *) &usa->sin.sin_addr :
+ (void *) &usa->sin6.sin6_addr, buf, len);
+#elif defined(_WIN32)
+ // Only Windoze Vista (and newer) have inet_ntop()
+ strncpy(buf, inet_ntoa(usa->sin.sin_addr), len);
+#else
+ inet_ntop(usa->sa.sa_family, (void *) &usa->sin.sin_addr, buf, len);
+#endif
+}
+
+// Print error message to the opened error log stream.
+void mg_cry(struct mg_connection *conn, const char *fmt, ...)
+{
+ char buf[MG_BUF_LEN], src_addr[IP_ADDR_STR_LEN];
+ va_list ap;
+ FILE *fp;
+ time_t timestamp;
+
+ va_start(ap, fmt);
+ IGNORE_UNUSED_RESULT(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.
+ if (conn->ctx->callbacks.log_message == NULL ||
+ conn->ctx->callbacks.log_message(conn, buf) == 0) {
+ fp = conn->ctx->config[ERROR_LOG_FILE] == NULL ? NULL :
+ fopen(conn->ctx->config[ERROR_LOG_FILE], "a+");
+
+ if (fp != NULL) {
+ flockfile(fp);
+ timestamp = time(NULL);
+
+ sockaddr_to_string(src_addr, sizeof(src_addr), &conn->client.rsa);
+ fprintf(fp, "[%010lu] [error] [client %s] ", (unsigned long) timestamp,
+ src_addr);
+
+ if (conn->request_info.request_method != NULL) {
+ fprintf(fp, "%s %s: ", conn->request_info.request_method,
+ conn->request_info.uri);
+ }
+
+ fprintf(fp, "%s", buf);
+ fputc('\n', fp);
+ funlockfile(fp);
+ fclose(fp);
+ }
+ }
+}
+
+// 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 CIVETWEB_VERSION;
+}
+
+struct mg_request_info *mg_get_request_info(struct mg_connection *conn)
+{
+ return &conn->request_info;
+}
+
+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(* (const unsigned char *) s);
+}
+
+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));
+}
+
+static const char *mg_strcasestr(const char *big_str, const char *small_str)
+{
+ int i, big_len = (int)strlen(big_str), small_len = (int)strlen(small_str);
+
+ for (i = 0; i <= big_len - small_len; i++) {
+ if (mg_strncasecmp(big_str + i, small_str, small_len) == 0) {
+ return big_str + i;
+ }
+ }
+
+ return NULL;
+}
+
+// Like snprintf(), but never returns negative value, or a 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) {
+ mg_cry(conn, "vsnprintf error");
+ n = 0;
+ } else if (n >= (int) buflen) {
+ mg_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,
+ PRINTF_FORMAT_STRING(const char *fmt), ...)
+PRINTF_ARGS(4, 5);
+
+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 delimiter and following whitespaces.
+// Advance pointer to buffer to the next word. Return found 0-terminated word.
+// Delimiters can be quoted with quotechar.
+static char *skip_quoted(char **buf, const char *delimiters,
+ const char *whitespace, char quotechar)
+{
+ char *p, *begin_word, *end_word, *end_whitespace;
+
+ begin_word = *buf;
+ end_word = begin_word + strcspn(begin_word, delimiters);
+
+ // Check for quotechar
+ if (end_word > begin_word) {
+ p = end_word - 1;
+ while (*p == quotechar) {
+ // If there is anything beyond end_word, copy it
+ if (*end_word == '\0') {
+ *p = '\0';
+ break;
+ } else {
+ size_t end_off = strcspn(end_word + 1, delimiters);
+ memmove (p, end_word, end_off + 1);
+ p += end_off; // p must correspond to end_word - 1
+ end_word += end_off + 1;
+ }
+ }
+ for (p++; p < end_word; p++) {
+ *p = '\0';
+ }
+ }
+
+ if (*end_word == '\0') {
+ *buf = end_word;
+ } else {
+ end_whitespace = end_word + 1 + strspn(end_word + 1, whitespace);
+
+ for (p = end_word; p < end_whitespace; p++) {
+ *p = '\0';
+ }
+
+ *buf = end_whitespace;
+ }
+
+ return begin_word;
+}
+
+// Simplified version of skip_quoted without quote char
+// and whitespace == delimiters
+static char *skip(char **buf, const char *delimiters)
+{
+ return skip_quoted(buf, delimiters, delimiters, 0);
+}
+
+
+// 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 a comma separated list of values.
+// It returns a list pointer shifted to the next value, or 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 = (const char *) 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;
+}
+
+// Perform case-insensitive match of string against pattern
+static int match_prefix(const char *pattern, int pattern_len, const char *str)
+{
+ const char *or_str;
+ int i, j, len, res;
+
+ if ((or_str = (const char *) memchr(pattern, '|', pattern_len)) != NULL) {
+ res = match_prefix(pattern, (int)(or_str - pattern), str);
+ return res > 0 ? res :
+ match_prefix(or_str + 1, (int)((pattern + pattern_len) - (or_str + 1)), str);
+ }
+
+ i = j = 0;
+ res = -1;
+ for (; i < pattern_len; i++, j++) {
+ if (pattern[i] == '?' && str[j] != '\0') {
+ continue;
+ } else if (pattern[i] == '$') {
+ return str[j] == '\0' ? j : -1;
+ } else if (pattern[i] == '*') {
+ i++;
+ if (pattern[i] == '*') {
+ i++;
+ len = (int) strlen(str + j);
+ } else {
+ len = (int) strcspn(str + j, "/");
+ }
+ if (i == pattern_len) {
+ return j + len;
+ }
+ do {
+ res = match_prefix(pattern + i, pattern_len - i, str + j + len);
+ } while (res == -1 && len-- > 0);
+ return res == -1 ? -1 : j + res + len;
+ } else if (lowercase(&pattern[i]) != lowercase(&str[j])) {
+ return -1;
+ }
+ }
+ return j;
+}
+
+// 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");
+ if (conn->must_close ||
+ conn->status_code == 401 ||
+ mg_strcasecmp(conn->ctx->config[ENABLE_KEEP_ALIVE], "yes") != 0 ||
+ (header != NULL && mg_strcasecmp(header, "keep-alive") != 0) ||
+ (header == NULL && http_version && strcmp(http_version, "1.1"))) {
+ return 0;
+ }
+ return 1;
+}
+
+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 *, int, const char *,
+ PRINTF_FORMAT_STRING(const char *fmt), ...)
+PRINTF_ARGS(4, 5);
+
+
+static void send_http_error(struct mg_connection *conn, int status,
+ const char *reason, const char *fmt, ...)
+{
+ char buf[MG_BUF_LEN];
+ va_list ap;
+ int len = 0;
+
+ conn->status_code = status;
+ if (conn->ctx->callbacks.http_error == NULL ||
+ conn->ctx->callbacks.http_error(conn, status)) {
+ buf[0] = '\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);
+ 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-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);
+ }
+}
+
+#if defined(_WIN32) && !defined(__SYMBIAN32__)
+static int pthread_mutex_init(pthread_mutex_t *mutex, void *unused)
+{
+ (void) unused;
+ *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)
+{
+ (void) unused;
+ 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 WaitForSingleObject(*mutex, INFINITE) == WAIT_OBJECT_0? 0 : -1;
+}
+
+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;
+}
+
+// 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], buf2[PATH_MAX];
+
+ mg_strlcpy(buf, path, sizeof(buf));
+ change_slashes_to_backslashes(buf);
+
+ // Convert to Unicode and back. If doubly-converted string does not
+ // match the original, something is fishy, reject.
+ memset(wbuf, 0, wbuf_len * sizeof(wchar_t));
+ MultiByteToWideChar(CP_UTF8, 0, buf, -1, wbuf, (int) wbuf_len);
+ WideCharToMultiByte(CP_UTF8, 0, wbuf, (int) wbuf_len, buf2, sizeof(buf2),
+ NULL, NULL);
+ if (strcmp(buf, buf2) != 0) {
+ wbuf[0] = L'\0';
+ }
+}
+
+#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 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 struct tm *gmtime(const time_t *ptime, struct tm *ptm)
+{
+ // FIXME(lsm): fix this.
+ return localtime(ptime, 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
+
+// Windows happily opens files with some garbage at the end of file name.
+// For example, fopen("a.cgi ", "r") on Windows successfully opens
+// "a.cgi", despite one would expect an error back.
+// This function returns non-0 if path ends with some garbage.
+static int path_cannot_disclose_cgi(const char *path)
+{
+ static const char *allowed_last_characters = "_-";
+ int last = path[strlen(path) - 1];
+ return isalnum(last) || strchr(allowed_last_characters, last) != NULL;
+}
+
+static int mg_stat(struct mg_connection *conn, const char *path,
+ struct file *filep)
+{
+ wchar_t wbuf[PATH_MAX];
+ WIN32_FILE_ATTRIBUTE_DATA info;
+
+ if (!is_file_in_memory(conn, path, filep)) {
+ to_unicode(path, wbuf, ARRAY_SIZE(wbuf));
+ if (GetFileAttributesExW(wbuf, GetFileExInfoStandard, &info) != 0) {
+ filep->size = MAKEUQUAD(info.nFileSizeLow, info.nFileSizeHigh);
+ filep->modification_time = SYS2UNIX_TIME(
+ info.ftLastWriteTime.dwLowDateTime,
+ info.ftLastWriteTime.dwHighDateTime);
+ filep->is_directory = info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY;
+ // If file name is fishy, reset the file structure and return error.
+ // Note it is important to reset, not just return the error, cause
+ // functions like is_file_opened() check the struct.
+ if (!filep->is_directory && !path_cannot_disclose_cgi(path)) {
+ memset(filep, 0, sizeof(*filep));
+ }
+ }
+ }
+
+ return filep->membuf != NULL || filep->modification_time != 0;
+}
+
+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];
+
+ (void) mode;
+ mg_strlcpy(buf, path, sizeof(buf));
+ change_slashes_to_backslashes(buf);
+
+ (void) MultiByteToWideChar(CP_UTF8, 0, buf, -1, wbuf, ARRAY_SIZE(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;
+}
+
+static 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;
+}
+
+#ifndef HAVE_POLL
+static int poll(struct pollfd *pfd, int n, int milliseconds)
+{
+ struct timeval tv;
+ fd_set set;
+ int i, result;
+ SOCKET maxfd = 0;
+
+ tv.tv_sec = milliseconds / 1000;
+ tv.tv_usec = (milliseconds % 1000) * 1000;
+ FD_ZERO(&set);
+
+ for (i = 0; i < n; i++) {
+ FD_SET((SOCKET) pfd[i].fd, &set);
+ pfd[i].revents = 0;
+
+ if (pfd[i].fd > maxfd) {
+ maxfd = pfd[i].fd;
+ }
+ }
+
+ if ((result = select((int)maxfd + 1, &set, NULL, NULL, &tv)) > 0) {
+ for (i = 0; i < n; i++) {
+ if (FD_ISSET(pfd[i].fd, &set)) {
+ pfd[i].revents = POLLIN;
+ }
+ }
+ }
+
+ return result;
+}
+#endif // HAVE_POLL
+
+static void set_close_on_exec(SOCKET sock, struct mg_connection *conn /* may be null */)
+{
+ (void) conn; /* Unused. */
+ (void) SetHandleInformation((HANDLE) sock, HANDLE_FLAG_INHERIT, 0);
+}
+
+int mg_start_thread(mg_thread_func_t f, void *p)
+{
+ return (long)_beginthread((void (__cdecl *)(void *)) f, 0, p) == -1L ? -1 : 0;
+}
+
+/* Start a thread storing the thread context. */
+
+static int mg_start_thread_with_id(unsigned (__stdcall *f)(void *), void *p,
+ pthread_t *threadidptr)
+{
+ uintptr_t uip;
+ HANDLE threadhandle;
+ int result;
+
+ uip = _beginthreadex(NULL, 0, (unsigned (__stdcall *)(void *)) f, p, 0,
+ NULL);
+ threadhandle = (HANDLE) uip;
+ if (threadidptr != NULL) {
+ *threadidptr = threadhandle;
+ }
+ result = (threadhandle == NULL) ? -1 : 0;
+
+ return result;
+}
+
+/* Wait for a thread to finish. */
+
+static int mg_join_thread(pthread_t threadid)
+{
+ int result;
+ DWORD dwevent;
+
+ result = -1;
+ dwevent = WaitForSingleObject(threadid, INFINITE);
+ if (dwevent == WAIT_FAILED) {
+ int err;
+
+ err = GetLastError();
+ DEBUG_TRACE(("WaitForSingleObject() failed, error %d", err));
+ } else {
+ if (dwevent == WAIT_OBJECT_0) {
+ CloseHandle(threadid);
+ result = 0;
+ }
+ }
+
+ return result;
+}
+
+static HANDLE dlopen(const char *dll_name, int flags)
+{
+ wchar_t wbuf[PATH_MAX];
+ (void) flags;
+ to_unicode(dll_name, wbuf, ARRAY_SIZE(wbuf));
+ return LoadLibraryW(wbuf);
+}
+
+static int dlclose(void *handle)
+{
+ int result;
+
+ if (FreeLibrary(handle) != 0) {
+ result = 0;
+ } else {
+ result = -1;
+ }
+
+ return result;
+}
+
+#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 void trim_trailing_whitespaces(char *s)
+{
+ char *e = s + strlen(s) - 1;
+ while (e > s && isspace(* (unsigned char *) e)) {
+ *e-- = '\0';
+ }
+}
+
+static pid_t spawn_process(struct mg_connection *conn, const char *prog,
+ char *envblk, char *envp[], int fdin,
+ int fdout, const char *dir)
+{
+ HANDLE me;
+ char *p, *interp, full_interp[PATH_MAX], full_dir[PATH_MAX],
+ cmdline[PATH_MAX], buf[PATH_MAX];
+ struct file file = STRUCT_FILE_INITIALIZER;
+ STARTUPINFOA si;
+ PROCESS_INFORMATION pi = { 0 };
+
+ (void) envp;
+
+ memset(&si, 0, sizeof(si));
+ si.cb = sizeof(si);
+
+ // TODO(lsm): redirect CGI errors to the error log file
+ si.dwFlags = STARTF_USESTDHANDLES | STARTF_USESHOWWINDOW;
+ si.wShowWindow = SW_HIDE;
+
+ me = GetCurrentProcess();
+ DuplicateHandle(me, (HANDLE) _get_osfhandle(fdin), me,
+ &si.hStdInput, 0, TRUE, DUPLICATE_SAME_ACCESS);
+ DuplicateHandle(me, (HANDLE) _get_osfhandle(fdout), 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[0] = buf[1] = '\0';
+
+ // Read the first line of the script into the buffer
+ snprintf(cmdline, sizeof(cmdline), "%s%c%s", dir, '/', prog);
+ if (mg_fopen(conn, cmdline, "r", &file)) {
+ p = (char *) file.membuf;
+ mg_fgets(buf, sizeof(buf), &file, &p);
+ mg_fclose(&file);
+ buf[sizeof(buf) - 1] = '\0';
+ }
+
+ if (buf[0] == '#' && buf[1] == '!') {
+ trim_trailing_whitespaces(buf + 2);
+ } else {
+ buf[2] = '\0';
+ }
+ interp = buf + 2;
+ }
+
+ if (interp[0] != '\0') {
+ GetFullPathNameA(interp, sizeof(full_interp), full_interp, NULL);
+ interp = full_interp;
+ }
+ GetFullPathNameA(dir, sizeof(full_dir), full_dir, NULL);
+
+ mg_snprintf(conn, cmdline, sizeof(cmdline), "%s%s\"%s\\%s\"",
+ interp, interp[0] == '\0' ? "" : " ", full_dir, prog);
+
+ DEBUG_TRACE(("Running [%s]", cmdline));
+ if (CreateProcessA(NULL, cmdline, NULL, NULL, TRUE,
+ CREATE_NEW_PROCESS_GROUP, envblk, NULL, &si, &pi) == 0) {
+ mg_cry(conn, "%s: CreateProcess(%s): %ld",
+ __func__, cmdline, ERRNO);
+ pi.hProcess = (pid_t) -1;
+ }
+
+ (void) CloseHandle(si.hStdOutput);
+ (void) CloseHandle(si.hStdInput);
+ if (pi.hThread != NULL)
+ (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(struct mg_connection *conn, const char *path,
+ struct file *filep)
+{
+ struct stat st;
+
+ if (!is_file_in_memory(conn, path, filep) && !stat(path, &st)) {
+ filep->size = st.st_size;
+ filep->modification_time = st.st_mtime;
+ filep->is_directory = S_ISDIR(st.st_mode);
+ } else {
+ filep->modification_time = (time_t) 0;
+ }
+
+ return filep->membuf != NULL || filep->modification_time != (time_t) 0;
+}
+
+static void set_close_on_exec(int fd, struct mg_connection *conn /* may be null */)
+{
+ if (fcntl(fd, F_SETFD, FD_CLOEXEC) != 0) {
+ if (conn)
+ mg_cry(conn, "%s: fcntl(F_SETFD FD_CLOEXEC) failed: %s",
+ __func__, strerror(ERRNO));
+ }
+}
+
+int mg_start_thread(mg_thread_func_t func, void *param)
+{
+ pthread_t thread_id;
+ pthread_attr_t attr;
+ int result;
+
+ (void) pthread_attr_init(&attr);
+ (void) pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
+
+#if defined(USE_STACK_SIZE) && USE_STACK_SIZE > 1
+ // Compile-time option to control stack size, e.g. -DUSE_STACK_SIZE=16384
+ (void) pthread_attr_setstacksize(&attr, USE_STACK_SIZE);
+#endif /* defined(USE_STACK_SIZE) && USE_STACK_SIZE > 1 */
+
+ result = pthread_create(&thread_id, &attr, func, param);
+ pthread_attr_destroy(&attr);
+
+ return result;
+}
+
+/* Start a thread storing the thread context. */
+
+static int mg_start_thread_with_id(mg_thread_func_t func, void *param,
+ pthread_t *threadidptr)
+{
+ pthread_t thread_id;
+ pthread_attr_t attr;
+ int result;
+
+ (void) pthread_attr_init(&attr);
+
+#if defined(USE_STACK_SIZE) && USE_STACK_SIZE > 1
+ // Compile-time option to control stack size, e.g. -DUSE_STACK_SIZE=16384
+ (void) pthread_attr_setstacksize(&attr, USE_STACK_SIZE);
+#endif /* defined(USE_STACK_SIZE) && USE_STACK_SIZE > 1 */
+
+ result = pthread_create(&thread_id, &attr, func, param);
+ pthread_attr_destroy(&attr);
+ if (threadidptr != NULL) {
+ *threadidptr = thread_id;
+ }
+ return result;
+}
+
+/* Wait for a thread to finish. */
+
+static int mg_join_thread(pthread_t threadid)
+{
+ int result;
+
+ result = pthread_join(threadid, NULL);
+ return result;
+}
+
+#ifndef NO_CGI
+static pid_t spawn_process(struct mg_connection *conn, const char *prog,
+ char *envblk, char *envp[], int fdin,
+ int fdout, const char *dir)
+{
+ pid_t pid;
+ const char *interp;
+
+ (void) envblk;
+
+ 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) {
+ mg_cry(conn, "%s: chdir(%s): %s", __func__, dir, strerror(ERRNO));
+ } else if (dup2(fdin, 0) == -1) {
+ mg_cry(conn, "%s: dup2(%d, 0): %s", __func__, fdin, strerror(ERRNO));
+ } else if (dup2(fdout, 1) == -1) {
+ mg_cry(conn, "%s: dup2(%d, 1): %s", __func__, fdout, strerror(ERRNO));
+ } else {
+ // Not redirecting stderr to stdout, to avoid output being littered
+ // with the error messages.
+ (void) close(fdin);
+ (void) close(fdout);
+
+ // After exec, all signal handlers are restored to their default values,
+ // with one exception of SIGCHLD. According to POSIX.1-2001 and Linux's
+ // implementation, SIGCHLD's handler will leave unchanged after exec
+ // if it was set to be ignored. Restore it to default action.
+ signal(SIGCHLD, SIG_DFL);
+
+ interp = conn->ctx->config[CGI_INTERPRETER];
+ if (interp == NULL) {
+ (void) execle(prog, prog, NULL, envp);
+ mg_cry(conn, "%s: execle(%s): %s", __func__, prog, strerror(ERRNO));
+ } else {
+ (void) execle(interp, interp, prog, NULL, envp);
+ mg_cry(conn, "%s: execle(%s %s): %s", __func__, interp, prog,
+ strerror(ERRNO));
+ }
+ }
+ exit(EXIT_FAILURE);
+ }
+
+ 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;
+
+ (void) ssl; // Get rid of warning
+ sent = 0;
+ while (sent < len) {
+
+ // How many bytes we send in this iteration
+ k = len - sent > INT_MAX ? INT_MAX : (int) (len - sent);
+
+#ifndef NO_SSL
+ if (ssl != NULL) {
+ n = SSL_write(ssl, buf + sent, k);
+ } else
+#endif
+ if (fp != NULL) {
+ n = (int) fwrite(buf + sent, 1, (size_t) k, fp);
+ if (ferror(fp))
+ n = -1;
+ } else {
+ n = send(sock, buf + sent, (size_t) k, MSG_NOSIGNAL);
+ }
+
+ if (n <= 0)
+ break;
+
+ sent += n;
+ }
+
+ return sent;
+}
+
+// Read from IO channel - opened file descriptor, socket, or SSL descriptor.
+// Return negative value on error, or number of bytes read on success.
+static int pull(FILE *fp, struct mg_connection *conn, char *buf, int len)
+{
+ int nread;
+
+ if (fp != NULL) {
+ // Use read() instead of fread(), because if we're reading from the CGI
+ // pipe, fread() may block until IO buffer is filled up. We cannot afford
+ // to block and must pass all read bytes immediately to the client.
+ nread = read(fileno(fp), buf, (size_t) len);
+#ifndef NO_SSL
+ } else if (conn->ssl != NULL) {
+ nread = SSL_read(conn->ssl, buf, len);
+#endif
+ } else {
+ nread = recv(conn->client.sock, buf, (size_t) len, 0);
+ }
+
+ return conn->ctx->stop_flag ? -1 : nread;
+}
+
+static int pull_all(FILE *fp, struct mg_connection *conn, char *buf, int len)
+{
+ int n, nread = 0;
+
+ while (len > 0 && conn->ctx->stop_flag == 0) {
+ n = pull(fp, conn, buf + nread, len);
+ if (n < 0) {
+ nread = n; // Propagate the error
+ break;
+ } else if (n == 0) {
+ break; // No more data to read
+ } else {
+ conn->consumed_content += n;
+ nread += n;
+ len -= n;
+ }
+ }
+
+ return nread;
+}
+
+int mg_read(struct mg_connection *conn, void *buf, size_t len)
+{
+ int n, buffered_len, nread;
+ const char *body;
+
+ // If Content-Length is not set, read until socket is closed
+ if (conn->consumed_content == 0 && conn->content_len == 0) {
+ conn->content_len = INT64_MAX;
+ conn->must_close = 1;
+ }
+
+ nread = 0;
+ if (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 = (size_t) to_read;
+ }
+
+ // Return buffered data
+ body = conn->buf + conn->request_len + conn->consumed_content;
+ buffered_len = (int)(&conn->buf[conn->data_len] - body);
+ if (buffered_len > 0) {
+ if (len < (size_t) buffered_len) {
+ buffered_len = (int) len;
+ }
+ memcpy(buf, body, (size_t) buffered_len);
+ len -= buffered_len;
+ conn->consumed_content += buffered_len;
+ nread += buffered_len;
+ buf = (char *) buf + buffered_len;
+ }
+
+ // We have returned all buffered data. Read new data from the remote socket.
+ n = pull_all(NULL, conn, (char *) buf, (int) len);
+ nread = n >= 0 ? nread + n : n;
+ }
+ return nread;
+}
+
+int mg_write(struct mg_connection *conn, const void *buf, size_t len)
+{
+ time_t now;
+ int64_t n, total, allowed;
+
+ if (conn->throttle > 0) {
+ if ((now = time(NULL)) != conn->last_throttle_time) {
+ conn->last_throttle_time = now;
+ conn->last_throttle_bytes = 0;
+ }
+ allowed = conn->throttle - conn->last_throttle_bytes;
+ if (allowed > (int64_t) len) {
+ allowed = len;
+ }
+ if ((total = push(NULL, conn->client.sock, conn->ssl, (const char *) buf,
+ (int64_t) allowed)) == allowed) {
+ buf = (char *) buf + total;
+ conn->last_throttle_bytes += total;
+ while (total < (int64_t) len && conn->ctx->stop_flag == 0) {
+ allowed = conn->throttle > (int64_t) len - total ?
+ (int64_t) len - total : conn->throttle;
+ if ((n = push(NULL, conn->client.sock, conn->ssl, (const char *) buf,
+ (int64_t) allowed)) != allowed) {
+ break;
+ }
+ sleep(1);
+ conn->last_throttle_bytes = allowed;
+ conn->last_throttle_time = time(NULL);
+ buf = (char *) buf + n;
+ total += n;
+ }
+ }
+ } else {
+ total = push(NULL, conn->client.sock, conn->ssl, (const char *) buf,
+ (int64_t) len);
+ }
+ return (int) total;
+}
+
+// Alternative alloc_vprintf() for non-compliant C runtimes
+static int alloc_vprintf2(char **buf, const char *fmt, va_list ap)
+{
+ va_list ap_copy;
+ int size = MG_BUF_LEN;
+ int len = -1;
+
+ *buf = NULL;
+ while (len == -1) {
+ if (*buf) free(*buf);
+ *buf = (char *)malloc(size *= 4);
+ if (!*buf) break;
+ va_copy(ap_copy, ap);
+ len = vsnprintf(*buf, size, fmt, ap_copy);
+ va_end(ap_copy);
+ }
+
+ return len;
+}
+
+// Print message to buffer. If buffer is large enough to hold the message,
+// return buffer. If buffer is to small, allocate large enough buffer on heap,
+// and return allocated buffer.
+static int alloc_vprintf(char **buf, size_t size, const char *fmt, va_list ap)
+{
+ va_list ap_copy;
+ int len;
+
+ // Windows is not standard-compliant, and vsnprintf() returns -1 if
+ // buffer is too small. Also, older versions of msvcrt.dll do not have
+ // _vscprintf(). However, if size is 0, vsnprintf() behaves correctly.
+ // Therefore, we make two passes: on first pass, get required message length.
+ // On second pass, actually print the message.
+ va_copy(ap_copy, ap);
+ len = vsnprintf(NULL, 0, fmt, ap_copy);
+ va_end(ap_copy);
+
+ if (len < 0) {
+ // C runtime is not standard compliant, vsnprintf() returned -1.
+ // Switch to alternative code path that uses incremental allocations.
+ va_copy(ap_copy, ap);
+ len = alloc_vprintf2(buf, fmt, ap);
+ va_end(ap_copy);
+ } else if (len > (int) size &&
+ (size = len + 1) > 0 &&
+ (*buf = (char *) malloc(size)) == NULL) {
+ len = -1; // Allocation failed, mark failure
+ } else {
+ va_copy(ap_copy, ap);
+ IGNORE_UNUSED_RESULT(vsnprintf(*buf, size, fmt, ap_copy));
+ va_end(ap_copy);
+ }
+
+ return len;
+}
+
+int mg_vprintf(struct mg_connection *conn, const char *fmt, va_list ap);
+
+int mg_vprintf(struct mg_connection *conn, const char *fmt, va_list ap)
+{
+ char mem[MG_BUF_LEN], *buf = mem;
+ int len;
+
+ if ((len = alloc_vprintf(&buf, sizeof(mem), fmt, ap)) > 0) {
+ len = mg_write(conn, buf, (size_t) len);
+ }
+ if (buf != mem && buf != NULL) {
+ free(buf);
+ }
+
+ return len;
+}
+
+int mg_printf(struct mg_connection *conn, const char *fmt, ...)
+{
+ va_list ap;
+ int result;
+
+ va_start(ap, fmt);
+ result = mg_vprintf(conn, fmt, ap);
+ va_end(ap);
+
+ return result;
+}
+
+int mg_url_decode(const char *src, int src_len, char *dst,
+ int dst_len, int is_form_url_encoded)
+{
+ int i, j, 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] == '%' && i < src_len - 2 &&
+ isxdigit(* (const unsigned char *) (src + i + 1)) &&
+ isxdigit(* (const unsigned char *) (src + i + 2))) {
+ a = tolower(* (const unsigned char *) (src + i + 1));
+ b = tolower(* (const 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 i >= src_len ? j : -1;
+}
+
+int mg_get_var(const char *data, size_t data_len, const char *name,
+ char *dst, size_t dst_len)
+{
+ return mg_get_var2(data,data_len,name,dst,dst_len,0);
+}
+
+int mg_get_var2(const char *data, size_t data_len, const char *name,
+ char *dst, size_t dst_len, size_t occurrence)
+{
+ const char *p, *e, *s;
+ size_t name_len;
+ int len;
+
+ if (dst == NULL || dst_len == 0) {
+ len = -2;
+ } else if (data == NULL || name == NULL || data_len == 0) {
+ len = -1;
+ dst[0] = '\0';
+ } else {
+ name_len = strlen(name);
+ e = data + data_len;
+ len = -1;
+ dst[0] = '\0';
+
+ // data is "var1=val1&var2=val2...". Find variable first
+ for (p = data; p + name_len < e; p++) {
+ if ((p == data || p[-1] == '&') && p[name_len] == '=' &&
+ !mg_strncasecmp(name, p, name_len) && 0 == occurrence--) {
+
+ // Point p to variable value
+ p += name_len + 1;
+
+ // Point s to the end of the value
+ s = (const char *) memchr(p, '&', (size_t)(e - p));
+ if (s == NULL) {
+ s = e;
+ }
+ assert(s >= p);
+
+ // Decode variable into destination buffer
+ len = mg_url_decode(p, (int)(s - p), dst, (int)dst_len, 1);
+
+ // Redirect error code from -1 to -2 (destination buffer too small).
+ if (len == -1) {
+ len = -2;
+ }
+ break;
+ }
+ }
+ }
+
+ return len;
+}
+
+int mg_get_cookie(const char *cookie_header, const char *var_name,
+ char *dst, size_t dst_size)
+{
+ const char *s, *p, *end;
+ int name_len, len = -1;
+
+ if (dst == NULL || dst_size == 0) {
+ len = -2;
+ } else if (var_name == NULL || (s = cookie_header) == NULL) {
+ len = -1;
+ dst[0] = '\0';
+ } else {
+ name_len = (int) strlen(var_name);
+ end = s + strlen(s);
+ dst[0] = '\0';
+
+ for (; (s = mg_strcasestr(s, var_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 = (int)(p - s);
+ mg_strlcpy(dst, s, (size_t) len + 1);
+ } else {
+ len = -3;
+ }
+ break;
+ }
+ }
+ }
+ return len;
+}
+
+static void convert_uri_to_file_name(struct mg_connection *conn, char *buf,
+ size_t buf_len, struct file *filep)
+{
+ struct vec a, b;
+ const char *rewrite, *uri = conn->request_info.uri,
+ *root = conn->ctx->config[DOCUMENT_ROOT];
+ char *p;
+ int match_len;
+ char gz_path[PATH_MAX];
+ char const* accept_encoding;
+
+ // Using buf_len - 1 because memmove() for PATH_INFO may shift part
+ // of the path one byte on the right.
+ // If document_root is NULL, leave the file empty.
+ mg_snprintf(conn, buf, buf_len - 1, "%s%s",
+ root == NULL ? "" : root,
+ root == NULL ? "" : uri);
+
+ rewrite = conn->ctx->config[REWRITE];
+ while ((rewrite = next_option(rewrite, &a, &b)) != NULL) {
+ if ((match_len = match_prefix(a.ptr, (int) a.len, uri)) > 0) {
+ mg_snprintf(conn, buf, buf_len - 1, "%.*s%s", (int) b.len, b.ptr,
+ uri + match_len);
+ break;
+ }
+ }
+
+ if (mg_stat(conn, buf, filep)) return;
+
+ // if we can't find the actual file, look for the file
+ // with the same name but a .gz extension. If we find it,
+ // use that and set the gzipped flag in the file struct
+ // to indicate that the response need to have the content-
+ // encoding: gzip header
+ // we can only do this if the browser declares support
+ if ((accept_encoding = mg_get_header(conn, "Accept-Encoding")) != NULL) {
+ if (strstr(accept_encoding,"gzip") != NULL) {
+ snprintf(gz_path, sizeof(gz_path), "%s.gz", buf);
+ if (mg_stat(conn, gz_path, filep)) {
+ filep->gzipped = 1;
+ return;
+ }
+ }
+ }
+
+ // Support PATH_INFO for CGI scripts.
+ for (p = buf + strlen(buf); p > buf + 1; p--) {
+ if (*p == '/') {
+ *p = '\0';
+ if (match_prefix(conn->ctx->config[CGI_EXTENSIONS],
+ (int)strlen(conn->ctx->config[CGI_EXTENSIONS]), buf) > 0 &&
+ mg_stat(conn, buf, filep)) {
+ // Shift PATH_INFO block one character right, e.g.
+ // "/x.cgi/foo/bar\x00" => "/x.cgi\x00/foo/bar\x00"
+ // conn->path_info is pointing to the local variable "path" declared
+ // in handle_request(), so PATH_INFO is not valid after
+ // handle_request returns.
+ conn->path_info = p + 1;
+ memmove(p + 2, p + 1, strlen(p + 1) + 1); // +1 is for trailing \0
+ p[1] = '/';
+ break;
+ } else {
+ *p = '/';
+ }
+ }
+ }
+}
+
+// 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;
+
+ for (s = buf, e = s + buflen - 1; len <= 0 && s < e; s++)
+ // Control characters are not allowed but >=128 is.
+ if (!isprint(* (const unsigned char *) s) && *s != '\r' &&
+ *s != '\n' && * (const unsigned char *) s < 128) {
+ len = -1;
+ break; // [i_a] abort scan as soon as one malformed character is found;
+ // don't let subsequent \r\n\r\n win us over anyhow
+ } 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 get_month_index(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;
+}
+
+static int num_leap_years(int year)
+{
+ return year / 4 - year / 100 + year / 400;
+}
+
+// Parse UTC date-time string, and return the corresponding time_t value.
+static time_t parse_date_string(const char *datetime)
+{
+ static const unsigned short days_before_month[] = {
+ 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334
+ };
+ char month_str[32];
+ int second, minute, hour, day, month, year, leap_days, days;
+ time_t result = (time_t) 0;
+
+ if (((sscanf(datetime, "%d/%3s/%d %d:%d:%d",
+ &day, month_str, &year, &hour, &minute, &second) == 6) ||
+ (sscanf(datetime, "%d %3s %d %d:%d:%d",
+ &day, month_str, &year, &hour, &minute, &second) == 6) ||
+ (sscanf(datetime, "%*3s, %d %3s %d %d:%d:%d",
+ &day, month_str, &year, &hour, &minute, &second) == 6) ||
+ (sscanf(datetime, "%d-%3s-%d %d:%d:%d",
+ &day, month_str, &year, &hour, &minute, &second) == 6)) &&
+ year > 1970 &&
+ (month = get_month_index(month_str)) != -1) {
+ leap_days = num_leap_years(year) - num_leap_years(1970);
+ year -= 1970;
+ days = year * 365 + days_before_month[month] + (day - 1) + leap_days;
+ result = (time_t) days * 24 * 3600 + (time_t) hour * 3600 +
+ minute * 60 + second;
+ }
+
+ return result;
+}
+
+// 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, backslashes and double-dots
+ while (s[0] != '\0') {
+ if (s[0] == '/' || s[0] == '\\') {
+ s++;
+ } else if (s[0] == '.' && s[1] == '.') {
+ s += 2;
+ } else {
+ break;
+ }
+ }
+ }
+ }
+ *p = '\0';
+}
+
+static const struct {
+ const char *extension;
+ size_t ext_len;
+ const char *mime_type;
+} builtin_mime_types[] = {
+ {".html", 5, "text/html"},
+ {".htm", 4, "text/html"},
+ {".shtm", 5, "text/html"},
+ {".shtml", 6, "text/html"},
+ {".css", 4, "text/css"},
+ {".js", 3, "application/x-javascript"},
+ {".ico", 4, "image/x-icon"},
+ {".gif", 4, "image/gif"},
+ {".jpg", 4, "image/jpeg"},
+ {".jpeg", 5, "image/jpeg"},
+ {".png", 4, "image/png"},
+ {".svg", 4, "image/svg+xml"},
+ {".txt", 4, "text/plain"},
+ {".torrent", 8, "application/x-bittorrent"},
+ {".wav", 4, "audio/x-wav"},
+ {".mp3", 4, "audio/x-mp3"},
+ {".mid", 4, "audio/mid"},
+ {".m3u", 4, "audio/x-mpegurl"},
+ {".ogg", 4, "audio/ogg"},
+ {".ram", 4, "audio/x-pn-realaudio"},
+ {".xml", 4, "text/xml"},
+ {".json", 5, "text/json"},
+ {".xslt", 5, "application/xml"},
+ {".xsl", 4, "application/xml"},
+ {".ra", 3, "audio/x-pn-realaudio"},
+ {".doc", 4, "application/msword"},
+ {".exe", 4, "application/octet-stream"},
+ {".zip", 4, "application/x-zip-compressed"},
+ {".xls", 4, "application/excel"},
+ {".tgz", 4, "application/x-tar-gz"},
+ {".tar", 4, "application/x-tar"},
+ {".gz", 3, "application/x-gunzip"},
+ {".arj", 4, "application/x-arj-compressed"},
+ {".rar", 4, "application/x-arj-compressed"},
+ {".rtf", 4, "application/rtf"},
+ {".pdf", 4, "application/pdf"},
+ {".swf", 4, "application/x-shockwave-flash"},
+ {".mpg", 4, "video/mpeg"},
+ {".webm", 5, "video/webm"},
+ {".mpeg", 5, "video/mpeg"},
+ {".mov", 4, "video/quicktime"},
+ {".mp4", 4, "video/mp4"},
+ {".m4v", 4, "video/x-m4v"},
+ {".asf", 4, "video/x-ms-asf"},
+ {".avi", 4, "video/x-msvideo"},
+ {".bmp", 4, "image/bmp"},
+ {".ttf", 4, "application/x-font-ttf"},
+ {NULL, 0, NULL}
+};
+
+const char *mg_get_builtin_mime_type(const char *path)
+{
+ const char *ext;
+ size_t i, path_len;
+
+ path_len = strlen(path);
+
+ 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) {
+ return builtin_mime_types[i].mime_type;
+ }
+ }
+
+ return "text/plain";
+}
+
+// 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 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;
+ }
+ }
+
+ vec->ptr = mg_get_builtin_mime_type(path);
+ vec->len = strlen(vec->ptr);
+}
+
+// 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 strings. Buffer must be 33 bytes.
+char *mg_md5(char buf[33], ...)
+{
+ md5_byte_t hash[16];
+ const char *p;
+ va_list ap;
+ md5_state_t ctx;
+
+ md5_init(&ctx);
+
+ va_start(ap, buf);
+ while ((p = va_arg(ap, const char *)) != NULL) {
+ md5_append(&ctx, (const md5_byte_t *) p, (int) strlen(p));
+ }
+ va_end(ap);
+
+ md5_finish(&ctx, hash);
+ bin2str(buf, hash, sizeof(hash));
+ return buf;
+}
+
+// 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];
+
+ // Some of the parameters may be NULL
+ if (method == NULL || nonce == NULL || nc == NULL || cnonce == NULL ||
+ qop == NULL || response == NULL) {
+ return 0;
+ }
+
+ // 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 void open_auth_file(struct mg_connection *conn, const char *path,
+ struct file *filep)
+{
+ char name[PATH_MAX];
+ const char *p, *e, *gpass = conn->ctx->config[GLOBAL_PASSWORDS_FILE];
+ struct file file = STRUCT_FILE_INITIALIZER;
+
+ if (gpass != NULL) {
+ // Use global passwords file
+ if (!mg_fopen(conn, gpass, "r", filep)) {
+#ifdef DEBUG
+ mg_cry(conn, "fopen(%s): %s", gpass, strerror(ERRNO));
+#endif
+ }
+ // Important: using local struct file to test path for is_directory flag.
+ // If filep is used, mg_stat() makes it appear as if auth file was opened.
+ } else if (mg_stat(conn, path, &file) && file.is_directory) {
+ mg_snprintf(conn, name, sizeof(name), "%s%c%s",
+ path, '/', PASSWORDS_FILE_NAME);
+ if (!mg_fopen(conn, name, "r", filep)) {
+#ifdef DEBUG
+ mg_cry(conn, "fopen(%s): %s", name, strerror(ERRNO));
+#endif
+ }
+ } else {
+ // Try to find .htpasswd in requested directory.
+ for (p = path, e = p + strlen(p) - 1; e > p; e--)
+ if (e[0] == '/')
+ break;
+ mg_snprintf(conn, name, sizeof(name), "%.*s%c%s",
+ (int) (e - p), p, '/', PASSWORDS_FILE_NAME);
+ if (!mg_fopen(conn, name, "r", filep)) {
+#ifdef DEBUG
+ mg_cry(conn, "fopen(%s): %s", name, strerror(ERRNO));
+#endif
+ }
+ }
+}
+
+// Parsed Authorization header
+struct ah {
+ char *user, *uri, *cnonce, *response, *qop, *nc, *nonce;
+};
+
+// Return 1 on success. Always initializes the ah structure.
+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;
+
+ (void) memset(ah, 0, sizeof(*ah));
+ 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;
+
+ // Parse authorization header
+ for (;;) {
+ // Gobble initial spaces
+ while (isspace(* (unsigned char *) s)) {
+ s++;
+ }
+ name = skip_quoted(&s, "=", " ", 0);
+ // Value is either quote-delimited, or ends at first comma or space.
+ if (s[0] == '\"') {
+ s++;
+ value = skip_quoted(&s, "\"", " ", '\\');
+ if (s[0] == ',') {
+ s++;
+ }
+ } else {
+ value = skip_quoted(&s, ", ", " ", 0); // IE uses commas, FF uses spaces
+ }
+ if (*name == '\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);
+ } else {
+ return 0;
+ }
+
+ return 1;
+}
+
+static char *mg_fgets(char *buf, size_t size, struct file *filep, char **p)
+{
+ char *eof;
+ size_t len;
+ char *memend;
+
+ if (filep->membuf != NULL && *p != NULL) {
+ memend = (char *) &filep->membuf[filep->size];
+ eof = (char *) memchr(*p, '\n', memend - *p); // Search for \n from p till the end of stream
+ if (eof != NULL) {
+ eof += 1; // Include \n
+ } else {
+ eof = memend; // Copy remaining data
+ }
+ len = (size_t) (eof - *p) > size - 1 ? size - 1 : (size_t) (eof - *p);
+ memcpy(buf, *p, len);
+ buf[len] = '\0';
+ *p += len;
+ return len ? eof : NULL;
+ } else if (filep->fp != NULL) {
+ return fgets(buf, (int)size, filep->fp);
+ } else {
+ return NULL;
+ }
+}
+
+// Authorize against the opened passwords file. Return 1 if authorized.
+static int authorize(struct mg_connection *conn, struct file *filep)
+{
+ struct ah ah;
+ char line[256], f_user[256] = "", ha1[256] = "", f_domain[256] = "", buf[MG_BUF_LEN], *p;
+
+ if (!parse_auth_header(conn, buf, sizeof(buf), &ah)) {
+ return 0;
+ }
+
+ // Loop over passwords file
+ p = (char *) filep->membuf;
+ while (mg_fgets(line, sizeof(line), filep, &p) != 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)
+{
+ char fname[PATH_MAX];
+ struct vec uri_vec, filename_vec;
+ const char *list;
+ struct file file = STRUCT_FILE_INITIALIZER;
+ int 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)) {
+ mg_snprintf(conn, fname, sizeof(fname), "%.*s",
+ (int) filename_vec.len, filename_vec.ptr);
+ if (!mg_fopen(conn, fname, "r", &file)) {
+ mg_cry(conn, "%s: cannot open %s: %s", __func__, fname, strerror(errno));
+ }
+ break;
+ }
+ }
+
+ if (!is_file_opened(&file)) {
+ open_auth_file(conn, path, &file);
+ }
+
+ if (is_file_opened(&file)) {
+ authorized = authorize(conn, &file);
+ mg_fclose(&file);
+ }
+
+ return authorized;
+}
+
+static void send_authorization_request(struct mg_connection *conn)
+{
+ conn->status_code = 401;
+ mg_printf(conn,
+ "HTTP/1.1 401 Unauthorized\r\n"
+ "Content-Length: 0\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)
+{
+ struct file file = STRUCT_FILE_INITIALIZER;
+ const char *passfile = conn->ctx->config[PUT_DELETE_PASSWORDS_FILE];
+ int ret = 0;
+
+ if (passfile != NULL && mg_fopen(conn, passfile, "r", &file)) {
+ ret = authorize(conn, &file);
+ mg_fclose(&file);
+ }
+
+ return ret;
+}
+
+int mg_modify_passwords_file(const char *fname, const char *domain,
+ const char *user, const char *pass)
+{
+ int found;
+ char line[512], u[512] = "", d[512] ="", ha1[33], tmp[PATH_MAX+1];
+ FILE *fp, *fp2;
+
+ found = 0;
+ fp = fp2 = NULL;
+
+ // Regard empty password as no password - remove user record.
+ if (pass != NULL && pass[0] == '\0') {
+ pass = NULL;
+ }
+
+ (void) snprintf(tmp, sizeof(tmp) - 1, "%s.tmp", fname);
+ tmp[sizeof(tmp) - 1] = 0;
+
+ // Create the file if does not exist
+ if ((fp = fopen(fname, "a+")) != NULL) {
+ (void) fclose(fp);
+ }
+
+ // Open the given file and temporary file
+ if ((fp = fopen(fname, "r")) == NULL) {
+ return 0;
+ } else if ((fp2 = fopen(tmp, "w+")) == NULL) {
+ fclose(fp);
+ 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 {
+ fprintf(fp2, "%s", line);
+ }
+ }
+
+ // If new user, just add it
+ if (!found && pass != NULL) {
+ mg_md5(ha1, user, ":", domain, ":", pass, NULL);
+ fprintf(fp2, "%s:%s:%s\n", user, domain, ha1);
+ }
+
+ // Close files
+ fclose(fp);
+ fclose(fp2);
+
+ // Put the temp file in place of real file
+ IGNORE_UNUSED_RESULT(remove(fname));
+ IGNORE_UNUSED_RESULT(rename(tmp, fname));
+
+ return 1;
+}
+
+static SOCKET conn2(struct mg_context *ctx /* may be null */, const char *host, int port,
+ int use_ssl, char *ebuf, size_t ebuf_len)
+{
+ struct sockaddr_in sain;
+ struct hostent *he;
+ SOCKET sock = INVALID_SOCKET;
+
+ if (host == NULL) {
+ snprintf(ebuf, ebuf_len, "%s", "NULL host");
+ } else if (use_ssl && SSLv23_client_method == NULL) {
+ snprintf(ebuf, ebuf_len, "%s", "SSL is not initialized");
+ // TODO(lsm): use something threadsafe instead of gethostbyname()
+ } else if ((he = gethostbyname(host)) == NULL) {
+ snprintf(ebuf, ebuf_len, "gethostbyname(%s): %s", host, strerror(ERRNO));
+ } else if ((sock = socket(PF_INET, SOCK_STREAM, 0)) == INVALID_SOCKET) {
+ snprintf(ebuf, ebuf_len, "socket(): %s", strerror(ERRNO));
+ } else {
+ set_close_on_exec(sock, fc(ctx));
+ memset(&sain, '\0', sizeof(sain));
+ sain.sin_family = AF_INET;
+ sain.sin_port = htons((uint16_t) port);
+ sain.sin_addr = * (struct in_addr *) he->h_addr_list[0];
+ if (connect(sock, (struct sockaddr *) &sain, sizeof(sain)) != 0) {
+ snprintf(ebuf, ebuf_len, "connect(%s:%d): %s",
+ host, port, strerror(ERRNO));
+ closesocket(sock);
+ sock = INVALID_SOCKET;
+ }
+ }
+ return sock;
+}
+
+int mg_url_encode(const char *src, char *dst, size_t dst_len)
+{
+ static const char *dont_escape = "._-$,;~()";
+ static const char *hex = "0123456789abcdef";
+ char *pos = dst;
+ const char *end = dst + dst_len - 1;
+
+ for (; *src != '\0' && pos < end; src++, pos++) {
+ if (isalnum(*(const unsigned char *) src) ||
+ strchr(dont_escape, * (const unsigned char *) src) != NULL) {
+ *pos = *src;
+ } else if (pos + 2 < end) {
+ pos[0] = '%';
+ pos[1] = hex[(* (const unsigned char *) src) >> 4];
+ pos[2] = hex[(* (const unsigned char *) src) & 0xf];
+ pos += 2;
+ } else {
+ return -1;
+ }
+ }
+
+ *pos = '\0';
+ return (*src == '\0') ? (int)(pos - dst) : -1;
+}
+
+static void print_dir_entry(struct de *de)
+{
+ char size[64], mod[64], href[PATH_MAX];
+ struct tm *tm;
+
+ if (de->file.is_directory) {
+ 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->file.size < 1024) {
+ mg_snprintf(de->conn, size, sizeof(size), "%d", (int) de->file.size);
+ } else if (de->file.size < 0x100000) {
+ mg_snprintf(de->conn, size, sizeof(size),
+ "%.1fk", (double) de->file.size / 1024.0);
+ } else if (de->file.size < 0x40000000) {
+ mg_snprintf(de->conn, size, sizeof(size),
+ "%.1fM", (double) de->file.size / 1048576);
+ } else {
+ mg_snprintf(de->conn, size, sizeof(size),
+ "%.1fG", (double) de->file.size / 1073741824);
+ }
+ }
+ tm = localtime(&de->file.modification_time);
+ if (tm != NULL) {
+ strftime(mod, sizeof(mod), "%d-%b-%Y %H:%M", tm);
+ } else {
+ strncpy(mod, "01-Jan-1970 00:00", sizeof(mod));
+ mod[sizeof(mod) - 1] = '\0';
+ }
+ mg_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->file.is_directory ? "/" : "",
+ de->file_name, de->file.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 = (const struct de *) p1, *b = (const 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->file.is_directory && !b->file.is_directory) {
+ return -1; // Always put directories on top
+ } else if (!a->file.is_directory && b->file.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->file.size == b->file.size ? 0 :
+ a->file.size > b->file.size ? 1 : -1;
+ } else if (*query_string == 'd') {
+ cmp_result = a->file.modification_time == b->file.modification_time ? 0 :
+ a->file.modification_time > b->file.modification_time ? 1 : -1;
+ }
+
+ return query_string[1] == 'd' ? -cmp_result : cmp_result;
+}
+
+static int must_hide_file(struct mg_connection *conn, const char *path)
+{
+ const char *pw_pattern = "**" PASSWORDS_FILE_NAME "$";
+ const char *pattern = conn->ctx->config[HIDE_FILES];
+ return match_prefix(pw_pattern, (int)strlen(pw_pattern), path) > 0 ||
+ (pattern != NULL && match_prefix(pattern, (int)strlen(pattern), path) > 0);
+}
+
+static int scan_directory(struct mg_connection *conn, const char *dir,
+ void *data, void (*cb)(struct de *, void *))
+{
+ char path[PATH_MAX];
+ struct dirent *dp;
+ DIR *dirp;
+ struct de de;
+
+ if ((dirp = opendir(dir)) == NULL) {
+ return 0;
+ } else {
+ de.conn = conn;
+
+ while ((dp = readdir(dirp)) != NULL) {
+ // Do not show current dir and hidden files
+ if (!strcmp(dp->d_name, ".") ||
+ !strcmp(dp->d_name, "..") ||
+ must_hide_file(conn, dp->d_name)) {
+ continue;
+ }
+
+ mg_snprintf(conn, path, sizeof(path), "%s%c%s", dir, '/', 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
[... 3170 lines stripped ...]