diff options
| -rw-r--r-- | networking/httpd.c | 396 |
1 files changed, 197 insertions, 199 deletions
diff --git a/networking/httpd.c b/networking/httpd.c index 7179286..40f37ba 100644 --- a/networking/httpd.c +++ b/networking/httpd.c @@ -963,212 +963,211 @@ static int sendCgi(const char *url, int inFd; int outFd; int firstLine = 1; + int status; + size_t post_readed_size, post_readed_idx; if (pipe(fromCgi) != 0) return 0; if (pipe(toCgi) != 0) return 0; + pid = fork(); if (pid < 0) return 0; + + if (!pid) { + /* child process */ + char *script; + char *purl = strdup(url); + char realpath_buff[MAXPATHLEN]; + + if (purl == NULL) + _exit(242); - do { - if (!pid) { - /* child process */ - char *script; - char *purl = strdup(url); - char realpath_buff[MAXPATHLEN]; - - if (purl == NULL) - _exit(242); - - inFd = toCgi[0]; - outFd = fromCgi[1]; - - dup2(inFd, 0); // replace stdin with the pipe - dup2(outFd, 1); // replace stdout with the pipe - if (!DEBUG) - dup2(outFd, 2); // replace stderr with the pipe - - close(toCgi[0]); - close(toCgi[1]); - close(fromCgi[0]); - close(fromCgi[1]); - - close(config->accepted_socket); - close(config->server_socket); - - /* - * Find PATH_INFO. - */ - script = purl; - while ((script = strchr(script + 1, '/')) != NULL) { - /* have script.cgi/PATH_INFO or dirs/script.cgi[/PATH_INFO] */ - struct stat sb; - - *script = '\0'; - if (is_directory(purl + 1, 1, &sb) == 0) { - /* not directory, found script.cgi/PATH_INFO */ - *script = '/'; - break; - } - *script = '/'; /* is directory, find next '/' */ - } - setenv1("PATH_INFO", script); /* set /PATH_INFO or "" */ - /* setenv1("PATH", getenv("PATH")); redundant */ - setenv1("REQUEST_METHOD", request); - if (config->query) { - char *uri = alloca(strlen(purl) + 2 + strlen(config->query)); - if (uri) - sprintf(uri, "%s?%s", purl, config->query); - setenv1("REQUEST_URI", uri); - } else { - setenv1("REQUEST_URI", purl); + inFd = toCgi[0]; + outFd = fromCgi[1]; + + dup2(inFd, 0); // replace stdin with the pipe + dup2(outFd, 1); // replace stdout with the pipe + if (!DEBUG) + dup2(outFd, 2); // replace stderr with the pipe + + close(toCgi[0]); + close(toCgi[1]); + close(fromCgi[0]); + close(fromCgi[1]); + + close(config->accepted_socket); + close(config->server_socket); + + /* + * Find PATH_INFO. + */ + script = purl; + while ((script = strchr(script + 1, '/')) != NULL) { + /* have script.cgi/PATH_INFO or dirs/script.cgi[/PATH_INFO] */ + struct stat sb; + + *script = '\0'; + if (is_directory(purl + 1, 1, &sb) == 0) { + /* not directory, found script.cgi/PATH_INFO */ + *script = '/'; + break; } - if (script != NULL) - *script = '\0'; /* reduce /PATH_INFO */ - /* SCRIPT_FILENAME required by PHP in CGI mode */ - if (!realpath(purl + 1, realpath_buff)) - goto error_execing_cgi; - setenv1("SCRIPT_FILENAME", realpath_buff); - /* set SCRIPT_NAME as full path: /cgi-bin/dirs/script.cgi */ - setenv1("SCRIPT_NAME", purl); - setenv1("QUERY_STRING", config->query); - setenv1("SERVER_SOFTWARE", httpdVersion); - putenv("SERVER_PROTOCOL=HTTP/1.0"); - putenv("GATEWAY_INTERFACE=CGI/1.1"); - setenv1("REMOTE_ADDR", config->rmt_ip_str); + *script = '/'; /* is directory, find next '/' */ + } + setenv1("PATH_INFO", script); /* set /PATH_INFO or "" */ + /* setenv1("PATH", getenv("PATH")); redundant */ + setenv1("REQUEST_METHOD", request); + if (config->query) { + char *uri = alloca(strlen(purl) + 2 + strlen(config->query)); + if (uri) + sprintf(uri, "%s?%s", purl, config->query); + setenv1("REQUEST_URI", uri); + } else { + setenv1("REQUEST_URI", purl); + } + if (script != NULL) + *script = '\0'; /* reduce /PATH_INFO */ + /* SCRIPT_FILENAME required by PHP in CGI mode */ + if (!realpath(purl + 1, realpath_buff)) + goto error_execing_cgi; + setenv1("SCRIPT_FILENAME", realpath_buff); + /* set SCRIPT_NAME as full path: /cgi-bin/dirs/script.cgi */ + setenv1("SCRIPT_NAME", purl); + setenv1("QUERY_STRING", config->query); + setenv1("SERVER_SOFTWARE", httpdVersion); + putenv("SERVER_PROTOCOL=HTTP/1.0"); + putenv("GATEWAY_INTERFACE=CGI/1.1"); + setenv1("REMOTE_ADDR", config->rmt_ip_str); #if ENABLE_FEATURE_HTTPD_SET_REMOTE_PORT_TO_ENV - setenv_long("REMOTE_PORT", config->port); + setenv_long("REMOTE_PORT", config->port); #endif - if (bodyLen) - setenv_long("CONTENT_LENGTH", bodyLen); - if (cookie) - setenv1("HTTP_COOKIE", cookie); - if (content_type) - setenv1("CONTENT_TYPE", content_type); + if (bodyLen) + setenv_long("CONTENT_LENGTH", bodyLen); + if (cookie) + setenv1("HTTP_COOKIE", cookie); + if (content_type) + setenv1("CONTENT_TYPE", content_type); #if ENABLE_FEATURE_HTTPD_BASIC_AUTH - if (config->remoteuser) { - setenv1("REMOTE_USER", config->remoteuser); - putenv("AUTH_TYPE=Basic"); - } + if (config->remoteuser) { + setenv1("REMOTE_USER", config->remoteuser); + putenv("AUTH_TYPE=Basic"); + } #endif - if (config->referer) - setenv1("HTTP_REFERER", config->referer); - - /* set execve argp[0] without path */ - argp[0] = strrchr(purl, '/') + 1; - /* but script argp[0] must have absolute path and chdiring to this */ - script = strrchr(realpath_buff, '/'); - if (!script) - goto error_execing_cgi; - *script = '\0'; - if (chdir(realpath_buff) == 0) { - // now run the program. If it fails, - // use _exit() so no destructors - // get called and make a mess. + if (config->referer) + setenv1("HTTP_REFERER", config->referer); + + /* set execve argp[0] without path */ + argp[0] = strrchr(purl, '/') + 1; + /* but script argp[0] must have absolute path and chdiring to this */ + script = strrchr(realpath_buff, '/'); + if (!script) + goto error_execing_cgi; + *script = '\0'; + if (chdir(realpath_buff) == 0) { + // now run the program. If it fails, + // use _exit() so no destructors + // get called and make a mess. #if ENABLE_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR - char *interpr = NULL; - char *suffix = strrchr(purl, '.'); - - if (suffix) { - Htaccess *cur; - for (cur = config->script_i; cur; cur = cur->next) { - if (strcmp(cur->before_colon + 1, suffix) == 0) { - interpr = cur->after_colon; - break; - } + char *interpr = NULL; + char *suffix = strrchr(purl, '.'); + + if (suffix) { + Htaccess *cur; + for (cur = config->script_i; cur; cur = cur->next) { + if (strcmp(cur->before_colon + 1, suffix) == 0) { + interpr = cur->after_colon; + break; } } + } #endif - *script = '/'; + *script = '/'; #if ENABLE_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR - if (interpr) - execv(interpr, argp); - else + if (interpr) + execv(interpr, argp); + else #endif - execv(realpath_buff, argp); - } + execv(realpath_buff, argp); + } error_execing_cgi: - /* send to stdout (even if we are not from inetd) */ - config->accepted_socket = 1; - sendHeaders(HTTP_NOT_FOUND); - _exit(242); - } /* end child */ + /* send to stdout (even if we are not from inetd) */ + config->accepted_socket = 1; + sendHeaders(HTTP_NOT_FOUND); + _exit(242); + } /* end child */ - } while (0); + /* parent process */ - if (pid > 0) { - /* parent process */ - int status; - size_t post_readed_size = 0, post_readed_idx = 0; + post_readed_size = 0; + post_readed_idx = 0; + inFd = fromCgi[0]; + outFd = toCgi[1]; + close(fromCgi[1]); + close(toCgi[0]); + signal(SIGPIPE, SIG_IGN); - inFd = fromCgi[0]; - outFd = toCgi[1]; - close(fromCgi[1]); - close(toCgi[0]); - signal(SIGPIPE, SIG_IGN); - - while (1) { - fd_set readSet; - fd_set writeSet; - char wbuf[128]; - int nfound; - int count; - - FD_ZERO(&readSet); - FD_ZERO(&writeSet); - FD_SET(inFd, &readSet); - if (bodyLen > 0 || post_readed_size > 0) { - FD_SET(outFd, &writeSet); - nfound = outFd > inFd ? outFd : inFd; - if (post_readed_size == 0) { - FD_SET(config->accepted_socket, &readSet); - if (nfound < config->accepted_socket) - nfound = config->accepted_socket; - } - /* Now wait on the set of sockets! */ - nfound = select(nfound + 1, &readSet, &writeSet, 0, NULL); - } else { - if (!bodyLen) { - close(outFd); - bodyLen = -1; - } - nfound = select(inFd + 1, &readSet, 0, 0, NULL); + while (1) { + fd_set readSet; + fd_set writeSet; + char wbuf[128]; + int nfound; + int count; + + FD_ZERO(&readSet); + FD_ZERO(&writeSet); + FD_SET(inFd, &readSet); + if (bodyLen > 0 || post_readed_size > 0) { + FD_SET(outFd, &writeSet); + nfound = outFd > inFd ? outFd : inFd; + if (post_readed_size == 0) { + FD_SET(config->accepted_socket, &readSet); + if (nfound < config->accepted_socket) + nfound = config->accepted_socket; } + /* Now wait on the set of sockets! */ + nfound = select(nfound + 1, &readSet, &writeSet, 0, NULL); + } else { + if (!bodyLen) { + close(outFd); + bodyLen = -1; + } + nfound = select(inFd + 1, &readSet, 0, 0, NULL); + } - if (nfound <= 0) { - if (waitpid(pid, &status, WNOHANG) > 0) { - close(inFd); - if (DEBUG && WIFEXITED(status)) - bb_error_msg("piped has exited with status=%d", WEXITSTATUS(status)); - if (DEBUG && WIFSIGNALED(status)) - bb_error_msg("piped has exited with signal=%d", WTERMSIG(status)); - break; - } - } else if (post_readed_size > 0 && FD_ISSET(outFd, &writeSet)) { - count = full_write(outFd, wbuf + post_readed_idx, post_readed_size); - if (count > 0) { - post_readed_size -= count; - post_readed_idx += count; - if (post_readed_size == 0) - post_readed_idx = 0; - } else { - post_readed_size = post_readed_idx = bodyLen = 0; /* broken pipe to CGI */ - } - } else if (bodyLen > 0 && post_readed_size == 0 && FD_ISSET(config->accepted_socket, &readSet)) { - count = bodyLen > (int)sizeof(wbuf) ? (int)sizeof(wbuf) : bodyLen; - count = safe_read(config->accepted_socket, wbuf, count); - if (count > 0) { - post_readed_size += count; - bodyLen -= count; - } else { - bodyLen = 0; /* closed */ - } + if (nfound <= 0) { + if (waitpid(pid, &status, WNOHANG) > 0) { + close(inFd); + if (DEBUG && WIFEXITED(status)) + bb_error_msg("piped has exited with status=%d", WEXITSTATUS(status)); + if (DEBUG && WIFSIGNALED(status)) + bb_error_msg("piped has exited with signal=%d", WTERMSIG(status)); + break; + } + } else if (post_readed_size > 0 && FD_ISSET(outFd, &writeSet)) { + count = full_write(outFd, wbuf + post_readed_idx, post_readed_size); + if (count > 0) { + post_readed_size -= count; + post_readed_idx += count; + if (post_readed_size == 0) + post_readed_idx = 0; + } else { + post_readed_size = post_readed_idx = bodyLen = 0; /* broken pipe to CGI */ } - if (FD_ISSET(inFd, &readSet)) { - int s = config->accepted_socket; - char *rbuf = config->buf; + } else if (bodyLen > 0 && post_readed_size == 0 && FD_ISSET(config->accepted_socket, &readSet)) { + count = bodyLen > (int)sizeof(wbuf) ? (int)sizeof(wbuf) : bodyLen; + count = safe_read(config->accepted_socket, wbuf, count); + if (count > 0) { + post_readed_size += count; + bodyLen -= count; + } else { + bodyLen = 0; /* closed */ + } + } + if (FD_ISSET(inFd, &readSet)) { + int s = config->accepted_socket; + char *rbuf = config->buf; #ifndef PIPE_BUF # define PIPESIZE 4096 /* amount of buffering in a pipe */ @@ -1179,28 +1178,27 @@ static int sendCgi(const char *url, # error "PIPESIZE >= MAX_MEMORY_BUFF" #endif - // There is something to read - count = safe_read(inFd, rbuf, PIPESIZE); - if (count == 0) - break; /* closed */ - if (count > 0) { - if (firstLine) { - rbuf[count] = 0; - /* check to see if the user script added headers */ - if (strncmp(rbuf, "HTTP/1.0 200 OK\r\n", 4) != 0) { - full_write(s, "HTTP/1.0 200 OK\r\n", 17); - } - if (strstr(rbuf, "ontent-") == 0) { - full_write(s, "Content-type: text/plain\r\n\r\n", 28); - } - firstLine = 0; + // There is something to read + count = safe_read(inFd, rbuf, PIPESIZE); + if (count == 0) + break; /* closed */ + if (count > 0) { + if (firstLine) { + rbuf[count] = 0; + /* check to see if the user script added headers */ + if (strncmp(rbuf, "HTTP/1.0 200 OK\r\n", 4) != 0) { + full_write(s, "HTTP/1.0 200 OK\r\n", 17); } - if (full_write(s, rbuf, count) != count) - break; - - if (DEBUG) - fprintf(stderr, "cgi read %d bytes\n", count); + if (strstr(rbuf, "ontent-") == 0) { + full_write(s, "Content-type: text/plain\r\n\r\n", 28); + } + firstLine = 0; } + if (full_write(s, rbuf, count) != count) + break; + + if (DEBUG) + fprintf(stderr, "cgi read %d bytes\n", count); } } } |