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1 #include <arpa/inet.h>
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2 #include <netdb.h>
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3 #include <stdio.h>
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4 #include <stdlib.h>
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5 #include <string.h>
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6 #include <sys/poll.h>
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7
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8 #include "list.h"
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9 #include "parsecfg.h"
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10 #include "screen.h"
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11 #include "socket.h"
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12 #include "utf8.h"
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13 #include "server.h"
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14 #include "harddefines.h"
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15 #include "utils.h"
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16 #include "buddies.h"
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17
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18 #define JABBERPORT 5222
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19
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20
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21 /* Desc: poll data from server
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22 *
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23 * In : socket
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24 * Out : pending buffer (or NULL if no incoming data)
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25 *
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26 * Note: it is up to the caller to free the returned string
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27 */
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28 char *srv_poll(int sock)
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29 {
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30 struct pollfd sock_p;
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31 sock_p.fd = sock;
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32 sock_p.events = POLLIN | POLLPRI;
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33 sock_p.revents = 0;
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34 poll(&sock_p, 1, 0);
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35
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36 if (sock_p.revents) {
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37 return sk_recv(sock);
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38 }
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39
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40 return NULL;
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41 }
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42
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43
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44 /* Desc: resolve host
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45 *
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46 * In : hostname
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47 * Out : 32bit address (or 0 if error)
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48 *
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49 * Note: -
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50 */
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51 static u_long srv_resolve(const char *host)
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52 {
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53 long i;
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54 struct hostent *he;
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55
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56 if ((i = inet_addr(host)) == -1) {
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57 if (!(he = gethostbyname(host)))
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58 return 0;
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59 else
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60 return (*(u_long *) he->h_addr);
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61 }
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62
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63 return i;
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64 }
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65
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66
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67 /* Desc: connect to jabber server
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68 *
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69 * In : config
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70 * Out : socket (or -1 on error)
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71 *
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72 * Note: if port is -1, the default Jabber port will be used
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73 */
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74 int srv_connect(const char *server, unsigned int port)
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75 {
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76 struct sockaddr_in name;
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77 int sock;
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78
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79 if (server == NULL) {
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80 fprintf(stderr, "You must supply a server name\n\r");
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81 return -1;
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82 }
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83
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84 if (port == -1U) {
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85 port = JABBERPORT;
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86 }
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87
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88 name.sin_family = AF_INET;
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89 name.sin_port = htons(port);
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90
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91 if (!(name.sin_addr.s_addr = srv_resolve(server))) {
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92 fprintf(stderr, "Cant resolve \"%s\"\n", server);
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93 return -1;
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94 }
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95
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96 if ((sock = sk_conn((struct sockaddr *) &name)) < 0) {
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97 fprintf(stderr, "Cant connect to \"%s:%u\"\n", server, port);
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98 return -1;
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99 }
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100
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101 return sock;
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102 }
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103
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104
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105 /* Desc: login into jabber server
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106 *
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107 * In : socket, servername, user, password, resource
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108 * Out : idsession
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109 *
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110 * Note: it is up to the caller to free the returned string
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111 */
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112 char *srv_login(int sock, const char *server, const char *user,
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113 const char *pass, const char *resource)
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114 {
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115 char *stringtosend = malloc(2048);
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116 char *response, *aux;
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117 char *idsession = malloc(128);
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118 int pos = 0;
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119
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120 memset(stringtosend, 0, 2048);
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121 strcpy(stringtosend, "<?xml version='1.0' encoding='UTF-8' ?>");
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122 strcat(stringtosend, "<stream:stream to='");
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123 strcat(stringtosend, server);
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124 strcat(stringtosend, "' xmlns='jabber:client' xmlns:stream='");
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125 strcat(stringtosend, "http://etherx.jabber.org/streams'>\n");
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126
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127 if (!sk_send(sock, stringtosend)) {
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128 perror("senddata (server.c:132)");
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129 return NULL;
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130 }
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131 response = sk_recv(sock);
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132 if (strstr(response, "error")) {
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133 /* fprintf(stderr, "Response not valid:\n%s\n\n", response); */
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134 scr_CreatePopup("Error",
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135 "El servidor no esta respondiendo correctamente",
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136 60, 0, NULL);
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137 return NULL;
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138 }
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139 aux = response;
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140 while (strncmp(aux, "id", 2))
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141 aux++;
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142 pos = 0;
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143 aux += 4;
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144 while (strncmp(aux, "'", 1)) {
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145 aux++;
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146 pos++;
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147 }
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148 aux -= pos;
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149 strncpy(idsession, aux, pos);
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150
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151 free(response);
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152
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153 strcpy(stringtosend, "<iq type='set' id='1000'>");
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154 strcat(stringtosend, "<query xmlns='jabber:iq:auth'>");
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155 strcat(stringtosend, "<username>");
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156 strcat(stringtosend, user);
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157 strcat(stringtosend, "</username><password>");
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158 strcat(stringtosend, pass);
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159 strcat(stringtosend, "</password><resource>");
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160 strcat(stringtosend, resource);
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161 strcat(stringtosend, "</resource></query></iq>\n");
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162 if (!sk_send(sock, stringtosend)) {
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163 perror("senddata (server.c:167)");
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164 return NULL;
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165 }
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166 response = sk_recv(sock);
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167 if (strstr(response, "error")) {
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168 /* fprintf(stderr, "Response not valid:\n%s\n\n", response);*/
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169 scr_CreatePopup("Error",
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170 "Cuenta no creada o contraseña incorrecta", 60, 0,
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171 NULL);
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172 scr_CreatePopup("Info", "Intentando crear la cuenta...", 60, 0, NULL);
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173
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174
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175 strcpy(stringtosend, "<iq type='set' id='reg' to='");
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176 strcat(stringtosend, server);
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177 strcat(stringtosend, "'>");
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178 strcat(stringtosend, "<query xmlns='jabber:iq:register'>");
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179 strcat(stringtosend, "<username>");
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180 strcat(stringtosend, user);
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181 strcat(stringtosend, "</username><password>");
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182 strcat(stringtosend, pass);
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183 strcat(stringtosend, "</password>");
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184 strcat(stringtosend, "</query></iq>\n");
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185 if (!sk_send(sock, stringtosend)) {
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186 perror("senddata (server.c:167)");
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187 return NULL;
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188 }
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189
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190 response = sk_recv(sock);
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191 scr_TerminateCurses();
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192 printf("Reinicie cabber!\n\n");
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193 return NULL;
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194 }
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195 free(response);
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196 free(stringtosend);
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197
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198 return idsession;
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199 }
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200
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201
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202 /* Desc: broadcast presence
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203 *
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204 * In : socket, presence string
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205 * Out : ?
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206 *
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207 * Note: see `sk_send' for output values
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208 */
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209 int srv_setpresence(int sock, const char *type)
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210 {
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211 int rv;
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212 char *str = malloc(1024);
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213
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214 sprintf(str, "<presence><status>%s</status></presence>", type);
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215 if (!(rv = sk_send(sock, str))) {
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216 perror("senddata (server.c:199)");
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217 }
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218 free(str);
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219
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220 return rv;
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221 }
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222
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223
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224 /* Desc: request roster
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225 *
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226 * In : socket
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227 * Out : roster string
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228 *
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229 * Note: it is up to the caller to free the returned string
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230 */
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231 char *srv_getroster(int sock)
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232 {
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233 char *str = malloc(1024);
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234
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235 strcpy(str, "<iq type='get' id='1001'><query xmlns='");
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236 strcat(str, "jabber:iq:roster'/></iq>\n");
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237 if (!sk_send(sock, str)) {
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238 perror("senddata (server.c:222)");
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239 return NULL;
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240 }
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241 free(str);
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242
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243 return sk_recv(sock);
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244 }
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245
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246
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247 /* Desc: send text to buddy
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248 *
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249 * In : socket, destination jid, text, source jid
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250 * Out : 0 = ok
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251 *
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252 * Note: -
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253 */
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254 int
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255 srv_sendtext(int sock, const char *to, const char *text, const char *from)
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256 {
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257 char *stringtosend = malloc(2048);
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258 char *utf8inputline = utf8_encode(text);
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259
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260 sprintf(stringtosend,
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261 "<message from='%s' to='%s' type='chat'><body>%s</body></message>",
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262 from, to, utf8inputline);
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263 if (!sk_send(sock, stringtosend)) {
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264 perror("senddata (server.c:247)");
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265 return -1;
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266 }
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267
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268 free(stringtosend);
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269 free(utf8inputline);
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270 return 0;
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271 }
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272
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273 int check_io(int fd1, int fd2)
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274 {
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275 int n = 0, i;
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276 fd_set fds;
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277 int io_pending = 0;
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278
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279 i = fd1;
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280 if (fd2 > fd1)
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281 i = fd2;
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282
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283 FD_ZERO(&fds);
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284 if (fd1 >= 0)
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285 FD_SET(fd1, &fds);
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286 else
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287 fd1 = 0;
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288 if (fd2 >= 0)
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289 FD_SET(fd2, &fds);
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290 else
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291 fd2 = 0;
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292
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293 if (fd2 == 0 && io_pending)
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294 n = 2;
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295 else if (select(i + 1, &fds, NULL, NULL, NULL) > 0)
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296 n = 1 * (FD_ISSET(fd1, &fds) > 0) + 2 * (FD_ISSET(fd2, &fds) > 0);
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297
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298 return (n);
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299 }
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300
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301 /* Desc: read data from server
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302 *
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303 * In : socket
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304 * Out : ptr to newly allocated srv_msg struct
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305 *
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306 * Note: returns NULL if no input from server
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307 */
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308 srv_msg *readserver(int sock)
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309 {
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310 char *buffer = sk_recv(sock);
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311
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312 if (buffer != NULL) {
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313 srv_msg *msg = calloc(1, sizeof(srv_msg));
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314 char *to = getattr(buffer, "to='");
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315 char *from = getattr(buffer, "from='");
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316 char *id = getattr(buffer, "id='");
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317 char *type = getattr(buffer, "type='");
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318 char *body = gettag(buffer, "body");
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319 char *status = gettag(buffer, "status");
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320 char *show = gettag(buffer, "show");
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321 char *line = (char *) malloc(1024);
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322 memset(line, 0, 1024);
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323
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324 /* scan for buffer */
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325 if (!strncmp(buffer, "<message", 8)) { /* manage messages */
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326 msg->m = SM_MESSAGE;
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327 } else if (!strncmp(buffer, "<presence", 9)) { /* manage presences */
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328 msg->m = SM_PRESENCE;
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329 if (!strncmp(type, "UNK", 3)) { /* assume online */
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330 msg->connected = FLAG_BUDDY_CONNECTED;
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331 } else if (!strncmp(type, "unavailable", 11)) { /* offline */
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332 msg->connected = 0;
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333 }
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334 } else {
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335 msg->m = SM_UNHANDLED;
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336 }
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337
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338 /* write the parsed buffer */
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339 switch (msg->m) {
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340 case SM_MESSAGE:
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341 {
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342 char *aux = strstr(from, "/");
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343 if (aux)
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344 *aux = '\0';
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345 msg->from = from;
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346 msg->body = utf8_decode(body);
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347 ut_WriteLog("+OK [%s]\n", buffer);
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348 }
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349 break;
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350
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351 case SM_PRESENCE:
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352 {
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353 char *aux = strstr(from, "/");
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354 if (aux)
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355 *aux = '\0';
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356 msg->from = from;
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357 }
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358 break;
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359
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360 case SM_UNHANDLED:
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361 ut_WriteLog("BAD [%s]\n", buffer);
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362 break;
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363
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364 }
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365 free(line);
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366 if (strncmp(to, "UNK", 3))
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367 free(to);
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368 if (strncmp(from, "UNK", 3) && (msg->m != SM_MESSAGE)
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369 && (msg->m != SM_PRESENCE))
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370 free(from);
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371 if (strncmp(id, "UNK", 3))
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372 free(id);
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373 if (strncmp(type, "UNK", 3))
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374 free(type);
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375 if (strncmp(body, "UNK", 3))
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376 free(body);
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377 if (strncmp(status, "UNK", 3))
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378 free(status);
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379 if (strncmp(show, "UNK", 3))
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380 free(show);
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381 free(buffer);
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382
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383 return msg;
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384 }
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385
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386 return NULL;
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387 }
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388
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389 void srv_AddBuddy(int sock, char *jidname)
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390 {
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391 char *buffer = (char *) malloc(1024);
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392 char *p, *str;
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393 int i;
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394
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395 memset(buffer, 0, 1024);
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396 strcpy(buffer, "<iq type='set'>");
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397 strcat(buffer, " <query xmlns='jabber:iq:roster'>");
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398 strcat(buffer, " <item");
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399 strcat(buffer, " jid='");
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400 strcat(buffer, jidname);
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401 strcat(buffer, "' name='");
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402
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403 str = strdup(jidname);
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404 p = strstr(str, "@");
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405 if (p)
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406 *p = '\0';
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407 strcat(buffer, str);
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408 strcat(buffer, "'/></query></iq>");
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409 sk_send(sock, buffer);
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410 free(buffer);
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411
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412 for (i = 0; i < 2; i++) {
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413 buffer = sk_recv(sock);
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414 ut_WriteLog("[Subscription]: %s\n", buffer);
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415 free(buffer);
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416 }
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417
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418 buffer = (char *) malloc(1024);
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419 memset(buffer, 0, 1024);
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420 strcpy(buffer, "<presence to='");
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421 strcat(buffer, jidname);
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422 strcat(buffer, "' type='subscribe'>");
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423 strcat(buffer, "<status>I would like to add you!</status></presence>");
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424 sk_send(sock, buffer);
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425 free(buffer);
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426
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427 buffer = sk_recv(sock);
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428 ut_WriteLog("[Subscription]: %s\n", buffer);
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429 free(buffer);
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430
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431 buffer = (char *) malloc(1024);
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432 memset(buffer, 0, 1024);
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433 strcpy(buffer, "<presence to='");
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434 strcat(buffer, jidname);
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435 strcat(buffer, "' type='subscribed'/>");
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436 sk_send(sock, buffer);
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437 free(buffer);
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438
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439 buffer = sk_recv(sock);
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440 ut_WriteLog("[Subscription]: %s\n", buffer);
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441 free(buffer);
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442 }
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443
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444 void srv_DelBuddy(int sock, char *jidname)
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445 {
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446 char *buffer = (char *) malloc(1024);
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447
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448 strcpy(buffer, "<iq type='set'><query xmlns='jabber:iq:roster'>");
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449 strcat(buffer, "<item jid='");
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450 strcat(buffer, jidname);
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451 strcat(buffer, "' subscription='remove'/></query></iq>");
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452
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453 sk_send(sock, buffer);
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454 free(buffer);
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455
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456 buffer = sk_recv(sock);
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457 ut_WriteLog("[SubscriptionRemove]: %s\n", buffer);
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458 free(buffer);
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459 }
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