[b7d3cc34] | 1 | /* |
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| 2 | * libyahoo2: yahoo_httplib.c |
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| 3 | * |
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| 4 | * Copyright (C) 2002-2004, Philip S Tellis <philip.tellis AT gmx.net> |
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| 5 | * |
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| 6 | * This program is free software; you can redistribute it and/or modify |
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| 7 | * it under the terms of the GNU General Public License as published by |
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| 8 | * the Free Software Foundation; either version 2 of the License, or |
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| 9 | * (at your option) any later version. |
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| 10 | * |
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| 11 | * This program is distributed in the hope that it will be useful, |
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| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 14 | * GNU General Public License for more details. |
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| 15 | * |
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| 16 | * You should have received a copy of the GNU General Public License |
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| 17 | * along with this program; if not, write to the Free Software |
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| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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| 19 | * |
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| 20 | */ |
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| 21 | |
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| 22 | #if HAVE_CONFIG_H |
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| 23 | # include <config.h> |
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| 24 | #endif |
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| 25 | |
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| 26 | #include <stdio.h> |
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| 27 | #include <stdlib.h> |
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| 28 | |
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| 29 | #if STDC_HEADERS |
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| 30 | # include <string.h> |
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| 31 | #else |
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| 32 | # if !HAVE_STRCHR |
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| 33 | # define strchr index |
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| 34 | # define strrchr rindex |
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| 35 | # endif |
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| 36 | char *strchr (), *strrchr (); |
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| 37 | # if !HAVE_MEMCPY |
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| 38 | # define memcpy(d, s, n) bcopy ((s), (d), (n)) |
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| 39 | # define memmove(d, s, n) bcopy ((s), (d), (n)) |
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| 40 | # endif |
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| 41 | #endif |
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| 42 | |
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| 43 | |
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| 44 | #include <errno.h> |
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| 45 | #ifndef _WIN32 |
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| 46 | #include <unistd.h> |
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| 47 | #endif |
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| 48 | #include <ctype.h> |
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| 49 | #include "yahoo2.h" |
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| 50 | #include "yahoo2_callbacks.h" |
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| 51 | #include "yahoo_httplib.h" |
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| 52 | #include "yahoo_util.h" |
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| 53 | |
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| 54 | #include "yahoo_debug.h" |
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| 55 | #ifdef __MINGW32__ |
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| 56 | # include <winsock2.h> |
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| 57 | # define write(a,b,c) send(a,b,c,0) |
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| 58 | # define read(a,b,c) recv(a,b,c,0) |
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| 59 | # define snprintf _snprintf |
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| 60 | #endif |
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| 61 | |
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| 62 | #ifdef USE_STRUCT_CALLBACKS |
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| 63 | extern struct yahoo_callbacks *yc; |
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| 64 | #define YAHOO_CALLBACK(x) yc->x |
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| 65 | #else |
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| 66 | #define YAHOO_CALLBACK(x) x |
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| 67 | #endif |
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| 68 | |
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| 69 | extern enum yahoo_log_level log_level; |
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| 70 | |
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| 71 | int yahoo_tcp_readline(char *ptr, int maxlen, int fd) |
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| 72 | { |
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| 73 | int n, rc; |
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| 74 | char c; |
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| 75 | |
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| 76 | for (n = 1; n < maxlen; n++) { |
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| 77 | |
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| 78 | do { |
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| 79 | rc = read(fd, &c, 1); |
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| 80 | } while(rc == -1 && (errno == EINTR || errno == EAGAIN)); /* this is bad - it should be done asynchronously */ |
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| 81 | |
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| 82 | if (rc == 1) { |
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| 83 | if(c == '\r') /* get rid of \r */ |
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| 84 | continue; |
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| 85 | *ptr = c; |
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| 86 | if (c == '\n') |
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| 87 | break; |
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| 88 | ptr++; |
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| 89 | } else if (rc == 0) { |
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| 90 | if (n == 1) |
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| 91 | return (0); /* EOF, no data */ |
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| 92 | else |
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| 93 | break; /* EOF, w/ data */ |
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| 94 | } else { |
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| 95 | return -1; |
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| 96 | } |
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| 97 | } |
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| 98 | |
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| 99 | *ptr = 0; |
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| 100 | return (n); |
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| 101 | } |
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| 102 | |
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| 103 | static int url_to_host_port_path(const char *url, |
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| 104 | char *host, int *port, char *path) |
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| 105 | { |
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| 106 | char *urlcopy=NULL; |
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| 107 | char *slash=NULL; |
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| 108 | char *colon=NULL; |
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| 109 | |
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| 110 | /* |
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| 111 | * http://hostname |
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| 112 | * http://hostname/ |
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| 113 | * http://hostname/path |
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| 114 | * http://hostname/path:foo |
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| 115 | * http://hostname:port |
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| 116 | * http://hostname:port/ |
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| 117 | * http://hostname:port/path |
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| 118 | * http://hostname:port/path:foo |
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| 119 | */ |
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| 120 | |
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| 121 | if(strstr(url, "http://") == url) { |
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| 122 | urlcopy = strdup(url+7); |
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| 123 | } else { |
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| 124 | WARNING(("Weird url - unknown protocol: %s", url)); |
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| 125 | return 0; |
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| 126 | } |
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| 127 | |
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| 128 | slash = strchr(urlcopy, '/'); |
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| 129 | colon = strchr(urlcopy, ':'); |
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| 130 | |
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| 131 | if(!colon || (slash && slash < colon)) { |
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| 132 | *port = 80; |
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| 133 | } else { |
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| 134 | *colon = 0; |
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| 135 | *port = atoi(colon+1); |
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| 136 | } |
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| 137 | |
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| 138 | if(!slash) { |
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| 139 | strcpy(path, "/"); |
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| 140 | } else { |
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| 141 | strcpy(path, slash); |
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| 142 | *slash = 0; |
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| 143 | } |
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| 144 | |
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| 145 | strcpy(host, urlcopy); |
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| 146 | |
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| 147 | FREE(urlcopy); |
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| 148 | |
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| 149 | return 1; |
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| 150 | } |
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| 151 | |
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| 152 | static int isurlchar(unsigned char c) |
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| 153 | { |
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| 154 | return (isalnum(c) || '-' == c || '_' == c); |
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| 155 | } |
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| 156 | |
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| 157 | char *yahoo_urlencode(const char *instr) |
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| 158 | { |
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| 159 | int ipos=0, bpos=0; |
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| 160 | char *str = NULL; |
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| 161 | int len = strlen(instr); |
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| 162 | |
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| 163 | if(!(str = y_new(char, 3*len + 1) )) |
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| 164 | return ""; |
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| 165 | |
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| 166 | while(instr[ipos]) { |
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| 167 | while(isurlchar(instr[ipos])) |
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| 168 | str[bpos++] = instr[ipos++]; |
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| 169 | if(!instr[ipos]) |
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| 170 | break; |
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| 171 | |
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| 172 | snprintf(&str[bpos], 4, "%%%.2x", instr[ipos]); |
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| 173 | bpos+=3; |
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| 174 | ipos++; |
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| 175 | } |
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| 176 | str[bpos]='\0'; |
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| 177 | |
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| 178 | /* free extra alloc'ed mem. */ |
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| 179 | len = strlen(str); |
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| 180 | str = y_renew(char, str, len+1); |
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| 181 | |
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| 182 | return (str); |
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| 183 | } |
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| 184 | |
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| 185 | char *yahoo_urldecode(const char *instr) |
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| 186 | { |
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| 187 | int ipos=0, bpos=0; |
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| 188 | char *str = NULL; |
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| 189 | char entity[3]={0,0,0}; |
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| 190 | unsigned dec; |
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| 191 | int len = strlen(instr); |
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| 192 | |
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| 193 | if(!(str = y_new(char, len+1) )) |
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| 194 | return ""; |
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| 195 | |
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| 196 | while(instr[ipos]) { |
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| 197 | while(instr[ipos] && instr[ipos]!='%') |
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| 198 | if(instr[ipos]=='+') { |
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| 199 | str[bpos++]=' '; |
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| 200 | ipos++; |
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| 201 | } else |
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| 202 | str[bpos++] = instr[ipos++]; |
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| 203 | if(!instr[ipos]) |
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| 204 | break; |
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| 205 | |
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| 206 | if(instr[ipos+1] && instr[ipos+2]) { |
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| 207 | ipos++; |
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| 208 | entity[0]=instr[ipos++]; |
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| 209 | entity[1]=instr[ipos++]; |
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| 210 | sscanf(entity, "%2x", &dec); |
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| 211 | str[bpos++] = (char)dec; |
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| 212 | } else { |
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| 213 | str[bpos++] = instr[ipos++]; |
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| 214 | } |
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| 215 | } |
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| 216 | str[bpos]='\0'; |
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| 217 | |
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| 218 | /* free extra alloc'ed mem. */ |
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| 219 | len = strlen(str); |
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| 220 | str = y_renew(char, str, len+1); |
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| 221 | |
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| 222 | return (str); |
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| 223 | } |
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| 224 | |
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| 225 | char *yahoo_xmldecode(const char *instr) |
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| 226 | { |
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| 227 | int ipos=0, bpos=0, epos=0; |
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| 228 | char *str = NULL; |
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| 229 | char entity[4]={0,0,0,0}; |
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| 230 | char *entitymap[5][2]={ |
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| 231 | {"amp;", "&"}, |
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| 232 | {"quot;", "\""}, |
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| 233 | {"lt;", "<"}, |
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| 234 | {"gt;", "<"}, |
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| 235 | {"nbsp;", " "} |
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| 236 | }; |
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| 237 | unsigned dec; |
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| 238 | int len = strlen(instr); |
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| 239 | |
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| 240 | if(!(str = y_new(char, len+1) )) |
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| 241 | return ""; |
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| 242 | |
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| 243 | while(instr[ipos]) { |
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| 244 | while(instr[ipos] && instr[ipos]!='&') |
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| 245 | if(instr[ipos]=='+') { |
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| 246 | str[bpos++]=' '; |
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| 247 | ipos++; |
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| 248 | } else |
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| 249 | str[bpos++] = instr[ipos++]; |
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| 250 | if(!instr[ipos] || !instr[ipos+1]) |
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| 251 | break; |
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| 252 | ipos++; |
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| 253 | |
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| 254 | if(instr[ipos] == '#') { |
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| 255 | ipos++; |
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| 256 | epos=0; |
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| 257 | while(instr[ipos] != ';') |
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| 258 | entity[epos++]=instr[ipos++]; |
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| 259 | sscanf(entity, "%u", &dec); |
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| 260 | str[bpos++] = (char)dec; |
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| 261 | ipos++; |
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| 262 | } else { |
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| 263 | int i; |
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| 264 | for (i=0; i<5; i++) |
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| 265 | if(!strncmp(instr+ipos, entitymap[i][0], |
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| 266 | strlen(entitymap[i][0]))) { |
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| 267 | str[bpos++] = entitymap[i][1][0]; |
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| 268 | ipos += strlen(entitymap[i][0]); |
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| 269 | break; |
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| 270 | } |
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| 271 | } |
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| 272 | } |
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| 273 | str[bpos]='\0'; |
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| 274 | |
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| 275 | /* free extra alloc'ed mem. */ |
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| 276 | len = strlen(str); |
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| 277 | str = y_renew(char, str, len+1); |
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| 278 | |
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| 279 | return (str); |
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| 280 | } |
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| 281 | |
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| 282 | typedef void (*http_connected)(int id, int fd, int error); |
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| 283 | |
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| 284 | struct callback_data { |
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| 285 | int id; |
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| 286 | yahoo_get_fd_callback callback; |
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| 287 | char *request; |
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| 288 | void *user_data; |
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| 289 | }; |
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| 290 | |
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| 291 | static void connect_complete(int fd, int error, void *data) |
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| 292 | { |
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| 293 | struct callback_data *ccd = data; |
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| 294 | if(error == 0 && fd > 0) |
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| 295 | write(fd, ccd->request, strlen(ccd->request)); |
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| 296 | FREE(ccd->request); |
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| 297 | ccd->callback(ccd->id, fd, error, ccd->user_data); |
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| 298 | FREE(ccd); |
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| 299 | } |
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| 300 | |
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| 301 | static void yahoo_send_http_request(int id, char *host, int port, char *request, |
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| 302 | yahoo_get_fd_callback callback, void *data) |
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| 303 | { |
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| 304 | struct callback_data *ccd=y_new0(struct callback_data, 1); |
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| 305 | ccd->callback = callback; |
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| 306 | ccd->id = id; |
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| 307 | ccd->request = strdup(request); |
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| 308 | ccd->user_data = data; |
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| 309 | |
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| 310 | YAHOO_CALLBACK(ext_yahoo_connect_async)(id, host, port, connect_complete, ccd); |
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| 311 | } |
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| 312 | |
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| 313 | void yahoo_http_post(int id, const char *url, const char *cookies, long content_length, |
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| 314 | yahoo_get_fd_callback callback, void *data) |
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| 315 | { |
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| 316 | char host[255]; |
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| 317 | int port = 80; |
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| 318 | char path[255]; |
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| 319 | char buff[1024]; |
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| 320 | |
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| 321 | if(!url_to_host_port_path(url, host, &port, path)) |
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| 322 | return; |
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| 323 | |
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| 324 | snprintf(buff, sizeof(buff), |
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| 325 | "POST %s HTTP/1.0\r\n" |
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| 326 | "Content-length: %ld\r\n" |
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| 327 | "User-Agent: Mozilla/4.5 [en] (" PACKAGE "/" VERSION ")\r\n" |
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| 328 | "Host: %s:%d\r\n" |
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| 329 | "Cookie: %s\r\n" |
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| 330 | "\r\n", |
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| 331 | path, content_length, |
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| 332 | host, port, |
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| 333 | cookies); |
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| 334 | |
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| 335 | yahoo_send_http_request(id, host, port, buff, callback, data); |
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| 336 | } |
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| 337 | |
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| 338 | void yahoo_http_get(int id, const char *url, const char *cookies, |
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| 339 | yahoo_get_fd_callback callback, void *data) |
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| 340 | { |
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| 341 | char host[255]; |
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| 342 | int port = 80; |
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| 343 | char path[255]; |
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| 344 | char buff[1024]; |
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| 345 | |
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| 346 | if(!url_to_host_port_path(url, host, &port, path)) |
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| 347 | return; |
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| 348 | |
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| 349 | snprintf(buff, sizeof(buff), |
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| 350 | "GET %s HTTP/1.0\r\n" |
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| 351 | "Host: %s:%d\r\n" |
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| 352 | "User-Agent: Mozilla/4.5 [en] (" PACKAGE "/" VERSION ")\r\n" |
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| 353 | "Cookie: %s\r\n" |
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| 354 | "\r\n", |
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| 355 | path, host, port, cookies); |
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| 356 | |
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| 357 | yahoo_send_http_request(id, host, port, buff, callback, data); |
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| 358 | } |
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| 359 | |
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| 360 | struct url_data { |
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| 361 | yahoo_get_url_handle_callback callback; |
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| 362 | void *user_data; |
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| 363 | }; |
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| 364 | |
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| 365 | static void yahoo_got_url_fd(int id, int fd, int error, void *data) |
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| 366 | { |
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| 367 | char *tmp=NULL; |
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| 368 | char buff[1024]; |
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| 369 | unsigned long filesize=0; |
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| 370 | char *filename=NULL; |
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| 371 | int n; |
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| 372 | |
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| 373 | struct url_data *ud = data; |
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| 374 | |
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| 375 | if(error || fd < 0) { |
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| 376 | ud->callback(id, fd, error, filename, filesize, ud->user_data); |
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| 377 | FREE(ud); |
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| 378 | return; |
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| 379 | } |
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| 380 | |
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| 381 | while((n=yahoo_tcp_readline(buff, sizeof(buff), fd)) > 0) { |
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| 382 | LOG(("Read:%s:\n", buff)); |
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| 383 | if(!strcmp(buff, "")) |
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| 384 | break; |
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| 385 | |
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| 386 | if( !strncasecmp(buff, "Content-length:", |
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| 387 | strlen("Content-length:")) ) { |
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| 388 | tmp = strrchr(buff, ' '); |
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| 389 | if(tmp) |
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| 390 | filesize = atol(tmp); |
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| 391 | } |
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| 392 | |
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| 393 | if( !strncasecmp(buff, "Content-disposition:", |
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| 394 | strlen("Content-disposition:")) ) { |
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| 395 | tmp = strstr(buff, "name="); |
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| 396 | if(tmp) { |
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| 397 | tmp+=strlen("name="); |
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| 398 | if(tmp[0] == '"') { |
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| 399 | char *tmp2; |
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| 400 | tmp++; |
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| 401 | tmp2 = strchr(tmp, '"'); |
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| 402 | if(tmp2) |
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| 403 | *tmp2 = '\0'; |
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| 404 | } else { |
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| 405 | char *tmp2; |
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| 406 | tmp2 = strchr(tmp, ';'); |
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| 407 | if(!tmp2) |
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| 408 | tmp2 = strchr(tmp, '\r'); |
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| 409 | if(!tmp2) |
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| 410 | tmp2 = strchr(tmp, '\n'); |
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| 411 | if(tmp2) |
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| 412 | *tmp2 = '\0'; |
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| 413 | } |
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| 414 | |
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| 415 | filename = strdup(tmp); |
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| 416 | } |
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| 417 | } |
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| 418 | } |
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| 419 | |
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| 420 | LOG(("n == %d\n", n)); |
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| 421 | LOG(("Calling callback, filename:%s, size: %ld\n", filename, filesize)); |
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| 422 | ud->callback(id, fd, error, filename, filesize, ud->user_data); |
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| 423 | FREE(ud); |
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| 424 | FREE(filename); |
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| 425 | } |
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| 426 | |
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| 427 | void yahoo_get_url_fd(int id, const char *url, const struct yahoo_data *yd, |
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| 428 | yahoo_get_url_handle_callback callback, void *data) |
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| 429 | { |
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| 430 | char buff[1024]; |
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| 431 | struct url_data *ud = y_new0(struct url_data, 1); |
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| 432 | snprintf(buff, sizeof(buff), "Y=%s; T=%s", yd->cookie_y, yd->cookie_t); |
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| 433 | ud->callback = callback; |
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| 434 | ud->user_data = data; |
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| 435 | yahoo_http_get(id, url, buff, yahoo_got_url_fd, ud); |
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| 436 | } |
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| 437 | |
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