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/* * libyahoo2: yahoo_httplib.c * * Copyright (C) 2002-2004, Philip S Tellis <philip.tellis AT gmx.net> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * */ #include <stdio.h> #include <stdlib.h> #if STDC_HEADERS # include <string.h> #else # if !HAVE_STRCHR # define strchr index # define strrchr rindex # endif char *strchr(), *strrchr(); # if !HAVE_MEMCPY # define memcpy(d, s, n) bcopy ((s), (d), (n)) # define memmove(d, s, n) bcopy ((s), (d), (n)) # endif #endif #include <errno.h> #ifndef _WIN32 #include <unistd.h> #endif #include <ctype.h> #include "yahoo2.h" #include "yahoo2_callbacks.h" #include "yahoo_httplib.h" #include "yahoo_util.h" #include "yahoo_debug.h" #ifdef __MINGW32__ # include <winsock2.h> # define snprintf _snprintf #endif #ifdef USE_STRUCT_CALLBACKS extern struct yahoo_callbacks *yc; #define YAHOO_CALLBACK(x) yc->x #else #define YAHOO_CALLBACK(x) x #endif extern enum yahoo_log_level log_level; #if 0 int yahoo_tcp_readline(char *ptr, int maxlen, void *fd) { int n, rc; char c; for (n = 1; n < maxlen; n++) { do { rc = YAHOO_CALLBACK(ext_yahoo_read) (fd, &c, 1); } while (rc == -1 && (errno == EINTR || errno == EAGAIN)); /* this is bad - it should be done asynchronously */ if (rc == 1) { if (c == '\r') /* get rid of \r */ continue; *ptr = c; if (c == '\n') break; ptr++; } else if (rc == 0) { if (n == 1) return (0); /* EOF, no data */ else break; /* EOF, w/ data */ } else { return -1; } } *ptr = 0; return (n); } #endif static int url_to_host_port_path(const char *url, char *host, int *port, char *path, int *ssl) { char *urlcopy = NULL; char *slash = NULL; char *colon = NULL; /* * http://hostname * http://hostname/ * http://hostname/path * http://hostname/path:foo * http://hostname:port * http://hostname:port/ * http://hostname:port/path * http://hostname:port/path:foo * and https:// variants of the above */ if (strstr(url, "http://") == url) { urlcopy = strdup(url + 7); } else if (strstr(url, "https://") == url) { urlcopy = strdup(url + 8); *ssl = 1; } else { WARNING(("Weird url - unknown protocol: %s", url)); return 0; } slash = strchr(urlcopy, '/'); colon = strchr(urlcopy, ':'); if (!colon || (slash && slash < colon)) { if (*ssl) *port = 443; else *port = 80; } else { *colon = 0; *port = atoi(colon + 1); } if (!slash) { strcpy(path, "/"); } else { strcpy(path, slash); *slash = 0; } strcpy(host, urlcopy); FREE(urlcopy); return 1; } static int isurlchar(unsigned char c) { return (isalnum(c)); } char *yahoo_urlencode(const char *instr) { int ipos = 0, bpos = 0; char *str = NULL; int len = strlen(instr); if (!(str = y_new(char, 3 *len + 1))) return ""; while (instr[ipos]) { while (isurlchar(instr[ipos])) str[bpos++] = instr[ipos++]; if (!instr[ipos]) break; snprintf(&str[bpos], 4, "%%%02x", instr[ipos] & 0xff); bpos += 3; ipos++; } str[bpos] = '\0'; /* free extra alloc'ed mem. */ len = strlen(str); str = y_renew(char, str, len + 1); return (str); } #if 0 char *yahoo_urldecode(const char *instr) { int ipos = 0, bpos = 0; char *str = NULL; char entity[3] = { 0, 0, 0 }; unsigned dec; int len = strlen(instr); if (!(str = y_new(char, len + 1))) return ""; while (instr[ipos]) { while (instr[ipos] && instr[ipos] != '%') if (instr[ipos] == '+') { str[bpos++] = ' '; ipos++; } else str[bpos++] = instr[ipos++]; if (!instr[ipos]) break; if (instr[ipos + 1] && instr[ipos + 2]) { ipos++; entity[0] = instr[ipos++]; entity[1] = instr[ipos++]; sscanf(entity, "%2x", &dec); str[bpos++] = (char)dec; } else { str[bpos++] = instr[ipos++]; } } str[bpos] = '\0'; /* free extra alloc'ed mem. */ len = strlen(str); str = y_renew(char, str, len + 1); return (str); } char *yahoo_xmldecode(const char *instr) { int ipos = 0, bpos = 0, epos = 0; char *str = NULL; char entity[4] = { 0, 0, 0, 0 }; char *entitymap[5][2] = { {"amp;", "&"}, {"quot;", "\""}, {"lt;", "<"}, {"gt;", "<"}, {"nbsp;", " "} }; unsigned dec; int len = strlen(instr); if (!(str = y_new(char, len + 1))) return ""; while (instr[ipos]) { while (instr[ipos] && instr[ipos] != '&') if (instr[ipos] == '+') { str[bpos++] = ' '; ipos++; } else str[bpos++] = instr[ipos++]; if (!instr[ipos] || !instr[ipos + 1]) break; ipos++; if (instr[ipos] == '#') { ipos++; epos = 0; while (instr[ipos] != ';') entity[epos++] = instr[ipos++]; sscanf(entity, "%u", &dec); str[bpos++] = (char)dec; ipos++; } else { int i; for (i = 0; i < 5; i++) if (!strncmp(instr + ipos, entitymap[i][0], strlen(entitymap[i][0]))) { str[bpos++] = entitymap[i][1][0]; ipos += strlen(entitymap[i][0]); break; } } } str[bpos] = '\0'; /* free extra alloc'ed mem. */ len = strlen(str); str = y_renew(char, str, len + 1); return (str); } #endif typedef void (*http_connected) (int id, void *fd, int error); struct callback_data { int id; yahoo_get_fd_callback callback; char *request; void *user_data; }; static void connect_complete(void *fd, int error, void *data) { struct callback_data *ccd = data; if (error == 0) YAHOO_CALLBACK(ext_yahoo_write) (fd, ccd->request, strlen(ccd->request)); free(ccd->request); ccd->callback(ccd->id, fd, error, ccd->user_data); FREE(ccd); } static void yahoo_send_http_request(int id, char *host, int port, char *request, yahoo_get_fd_callback callback, void *data, int use_ssl) { struct callback_data *ccd = y_new0(struct callback_data, 1); ccd->callback = callback; ccd->id = id; ccd->request = strdup(request); ccd->user_data = data; YAHOO_CALLBACK(ext_yahoo_connect_async) (id, host, port, connect_complete, ccd, use_ssl); } void yahoo_http_post(int id, const char *url, const char *cookies, long content_length, yahoo_get_fd_callback callback, void *data) { char host[255]; int port = 80; char path[255]; char buff[1024]; int ssl = 0; if (!url_to_host_port_path(url, host, &port, path, &ssl)) return; /* thanks to kopete dumpcap */ snprintf(buff, sizeof(buff), "POST %s HTTP/1.1\r\n" "Cookie: %s\r\n" "User-Agent: Mozilla/5.0\r\n" "Host: %s\r\n" "Content-Length: %ld\r\n" "Cache-Control: no-cache\r\n" "\r\n", path, cookies, host, content_length); yahoo_send_http_request(id, host, port, buff, callback, data, ssl); } void yahoo_http_get(int id, const char *url, const char *cookies, int http11, int keepalive, yahoo_get_fd_callback callback, void *data) { char host[255]; int port = 80; char path[255]; char buff[2048]; char cookiebuff[1024]; int ssl = 0; if (!url_to_host_port_path(url, host, &port, path, &ssl)) return; /* Allow cases when we don't need to send a cookie */ if (cookies) snprintf(cookiebuff, sizeof(cookiebuff), "Cookie: %s\r\n", cookies); else cookiebuff[0] = '\0'; snprintf(buff, sizeof(buff), "GET %s HTTP/1.%s\r\n" "%sHost: %s\r\n" "User-Agent: Mozilla/4.5 [en] (" PACKAGE "/" VERSION ")\r\n" "Accept: */*\r\n" "%s" "\r\n", path, http11?"1":"0", cookiebuff, host, keepalive? "Connection: Keep-Alive\r\n":"Connection: close\r\n"); yahoo_send_http_request(id, host, port, buff, callback, data, ssl); } void yahoo_http_head(int id, const char *url, const char *cookies, int len, char *payload, yahoo_get_fd_callback callback, void *data) { char host[255]; int port = 80; char path[255]; char buff[2048]; char cookiebuff[1024]; int ssl = 0; if (!url_to_host_port_path(url, host, &port, path, &ssl)) return; /* Allow cases when we don't need to send a cookie */ if (cookies) snprintf(cookiebuff, sizeof(cookiebuff), "Cookie: %s\r\n", cookies); else cookiebuff[0] = '\0'; snprintf(buff, sizeof(buff), "HEAD %s HTTP/1.0\r\n" "Accept: */*\r\n" "Host: %s:%d\r\n" "User-Agent: Mozilla/4.5 [en] (" PACKAGE "/" VERSION ")\r\n" "%s" "Content-Length: %d\r\n" "Cache-Control: no-cache\r\n" "\r\n%s", path, host, port, cookiebuff, len, payload?payload:""); yahoo_send_http_request(id, host, port, buff, callback, data, ssl); }


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