Mercurial > hg > nnchat
annotate libnnchat.c @ 89:c2d916b340bf
Change some typedef names; Add struct for user list handling.
author | Matti Hamalainen <ccr@tnsp.org> |
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date | Wed, 06 May 2009 05:05:02 +0300 |
parents | e36df57c5b0f |
children | 1e0bf7b4fd41 |
rev | line source |
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1 /* |
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2 * NNChat - Custom chat client for NewbieNudes.com chatrooms |
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3 * Written by Matti 'ccr' Hämäläinen |
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4 * (C) Copyright 2008 Tecnic Software productions (TNSP) |
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5 */ |
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6 #include "libnnchat.h" |
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7 |
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8 |
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9 typedef struct { |
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10 char c; |
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11 char *ent; |
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12 } html_entity_t; |
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13 |
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14 |
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15 html_entity_t HTMLEntities[] = { |
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16 { '<', "<" }, |
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17 { '>', ">" }, |
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18 }; |
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19 |
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20 const int numHTMLEntities = (sizeof(HTMLEntities) / sizeof(HTMLEntities[0])); |
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21 |
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22 |
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23 int openConnection(struct in_addr *addr, const int port) |
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24 { |
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25 struct sockaddr_in tmpAddr; |
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26 int sock = -1; |
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27 |
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28 tmpAddr.sin_family = AF_INET; |
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29 tmpAddr.sin_port = htons(port); |
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30 tmpAddr.sin_addr = *addr; |
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31 |
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32 THMSG(1, "Connecting to %s:%d ...\n", |
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33 inet_ntoa(tmpAddr.sin_addr), port); |
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34 |
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35 if ((sock = socket(PF_INET, SOCK_STREAM, 0)) == -1) { |
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36 THERR("Could not open socket: %s\n", strerror(errno)); |
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37 return -2; |
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38 } |
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39 |
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40 THMSG(2, "Using socket %d.\n", sock); |
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41 |
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42 if (connect(sock, (struct sockaddr *) &tmpAddr, sizeof(tmpAddr)) == -1) { |
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43 THERR("Could not connect: %s\n", strerror(errno)); |
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44 return -5; |
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45 } |
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46 |
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47 return sock; |
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48 } |
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49 |
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50 |
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51 void closeConnection(const int sock) |
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52 { |
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53 if (sock >= 0) { |
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54 #ifdef __WIN32 |
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55 closesocket(sock); |
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56 #else |
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57 close(sock); |
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58 #endif |
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59 } |
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60 } |
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61 |
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62 |
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63 BOOL sendToSocket(const int sock, char *buf, const size_t bufLen) |
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64 { |
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65 size_t bufLeft = bufLen; |
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66 char *bufPtr = buf; |
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67 |
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68 while (bufLeft > 0) { |
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69 ssize_t bufSent; |
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70 bufSent = send(sock, bufPtr, bufLeft, 0); |
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71 if (bufSent < 0) return FALSE; |
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72 bufLeft -= bufSent; |
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73 bufPtr += bufSent; |
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74 } |
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75 return TRUE; |
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76 } |
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77 |
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78 |
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79 BOOL bufRealloc(char **buf, size_t *size, size_t add) |
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80 { |
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81 return ((*buf = th_realloc(*buf, *size + add)) != NULL); |
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82 } |
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83 |
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84 #define PUSHCHAR(x) bufPushChar(&result, &resSize, &resPos, x) |
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85 BOOL bufPushChar(char **buf, size_t *size, size_t *pos, char ch) |
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86 { |
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87 if (*pos >= *size && !bufRealloc(buf, size, SET_ALLOC_SIZE)) |
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88 return FALSE; |
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89 |
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90 (*buf)[*pos] = ch; |
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91 (*pos)++; |
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92 return TRUE; |
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93 } |
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94 |
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95 #define PUSHSTR(x) bufPushStr(&result, &resSize, &resPos, x) |
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96 BOOL bufPushStr(char **buf, size_t *size, size_t *pos, char *str) |
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97 { |
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98 size_t tmpLen; |
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99 |
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100 if (str == NULL) return FALSE; |
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101 tmpLen = strlen(str); |
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102 |
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103 if ((*pos + tmpLen) >= *size && !bufRealloc(buf, size, tmpLen + SET_ALLOC_SIZE)) |
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104 return FALSE; |
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105 |
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106 strcpy(*buf + *pos, str); |
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107 (*pos) += tmpLen; |
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108 return TRUE; |
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109 } |
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110 |
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111 |
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112 char *encodeStr1(const char *str) |
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113 { |
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114 const char *s = str; |
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115 char *result; |
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116 size_t resSize, resPos = 0; |
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117 |
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118 if (str == NULL) return NULL; |
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119 |
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120 resSize = strlen(str) + SET_ALLOC_SIZE; |
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121 if ((result = th_malloc(resSize)) == NULL) |
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122 return NULL; |
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123 |
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124 while (*s) { |
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125 switch (*s) { |
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126 case 32: |
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127 PUSHCHAR('+'); |
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128 break; |
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129 |
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130 default: |
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131 if (th_isalnum(*s)) |
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132 PUSHCHAR(*s); |
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133 else { |
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134 char tmpStr[4]; |
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135 sprintf(tmpStr, "%2X", (unsigned char) *s); |
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136 PUSHCHAR('%'); |
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137 PUSHSTR(tmpStr); |
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138 } |
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139 break; |
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140 } |
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141 s++; |
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142 } |
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143 PUSHCHAR(0); |
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144 |
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145 return result; |
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146 } |
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147 |
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148 |
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149 static int getHexDigit(const int c, const int shift) |
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150 { |
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151 int i; |
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152 |
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153 if (c >= 'A' && c <= 'F') |
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154 i = c - 'A' + 10; |
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155 else if (c >= 'a' && c <= 'f') |
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156 i = c - 'a' + 10; |
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157 else if (c >= '0' && c <= '9') |
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158 i = c - '0'; |
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159 else |
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160 return -1; |
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161 |
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162 return i << shift; |
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163 } |
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164 |
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165 |
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166 char *decodeStr1(const char *str) |
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167 { |
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168 const char *s = str; |
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169 char *result; |
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170 size_t resSize, resPos = 0; |
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171 int c; |
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172 |
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173 if (str == NULL) return NULL; |
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174 |
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175 resSize = strlen(str) + SET_ALLOC_SIZE; |
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176 if ((result = th_malloc(resSize)) == NULL) |
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177 return NULL; |
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178 |
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179 while (*s) { |
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180 switch (*s) { |
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181 case '+': |
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182 PUSHCHAR(' '); |
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183 s++; |
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184 break; |
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185 |
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186 case '½': |
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187 /* Escape these .. */ |
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188 PUSHCHAR('½'); |
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189 PUSHCHAR('½'); |
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190 s++; |
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191 break; |
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192 |
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193 case '\r': |
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194 PUSHCHAR(' '); |
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195 s++; |
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196 break; |
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197 |
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198 case '%': |
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199 s++; |
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200 if (*s == '%') |
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201 PUSHCHAR('%'); |
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202 else if ((c = getHexDigit(*s, 4)) >= 0) { |
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203 int i = getHexDigit(*(++s), 0); |
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204 if (i >= 0) { |
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205 PUSHCHAR(c | i); |
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206 } else { |
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207 PUSHCHAR('§'); |
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208 PUSHCHAR(*s); |
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209 } |
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210 } else { |
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211 PUSHCHAR('§'); |
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212 PUSHCHAR(*s); |
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213 } |
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214 s++; |
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215 break; |
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216 |
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217 default: |
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218 PUSHCHAR(*s); |
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219 s++; |
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220 } |
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221 } |
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222 PUSHCHAR(0); |
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223 |
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224 return result; |
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225 } |
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226 |
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227 |
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228 char *stripXMLTags(const char *str) |
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229 { |
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230 const char *s = str; |
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231 char *result; |
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232 size_t resSize, resPos = 0; |
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233 |
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234 if (str == NULL) return NULL; |
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235 |
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236 resSize = strlen(str) + SET_ALLOC_SIZE; |
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237 if ((result = th_malloc(resSize)) == NULL) |
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238 return NULL; |
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239 |
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240 while (*s) { |
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241 if (*s == '<') { |
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242 while (*s && *s != '>') s++; |
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243 if (*s == '>') s++; |
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244 } else |
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245 PUSHCHAR(*s++); |
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246 } |
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247 PUSHCHAR(0); |
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248 |
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249 return result; |
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250 } |
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251 |
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252 |
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253 char *encodeStr2(const char *str) |
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254 { |
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255 const char *s = str; |
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256 char *result; |
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257 size_t resSize, resPos = 0; |
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258 |
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259 if (str == NULL) return NULL; |
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260 |
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261 resSize = strlen(str) + SET_ALLOC_SIZE; |
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262 if ((result = th_malloc(resSize)) == NULL) |
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263 return NULL; |
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264 |
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265 while (*s) { |
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266 int i; |
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267 BOOL found = FALSE; |
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268 for (i = 0; i < numHTMLEntities; i++) |
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269 if (HTMLEntities[i].c == *s) { |
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270 PUSHSTR(HTMLEntities[i].ent); |
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271 found = TRUE; |
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272 break; |
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273 } |
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274 if (!found) PUSHCHAR(*s); |
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275 |
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276 s++; |
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277 } |
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278 PUSHCHAR(0); |
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279 |
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280 return result; |
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281 } |
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282 |
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283 |
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284 char *decodeStr2(const char *str) |
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285 { |
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286 const char *s = str; |
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287 char *result; |
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288 size_t resSize, resPos = 0; |
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289 |
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290 if (str == NULL) return NULL; |
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291 |
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292 resSize = strlen(str); |
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293 if ((result = th_malloc(resSize)) == NULL) |
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294 return NULL; |
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295 |
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296 while (*s) { |
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297 if (*s == '&') { |
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298 int i; |
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299 BOOL found = FALSE; |
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300 for (i = 0; i < numHTMLEntities; i++) { |
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301 html_entity_t *ent = &HTMLEntities[i]; |
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302 int len = strlen(ent->ent); |
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303 if (!strncmp(s, ent->ent, len)) { |
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304 PUSHCHAR(ent->c); |
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305 s += len; |
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306 found = TRUE; |
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307 break; |
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308 } |
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309 } |
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310 if (!found) PUSHCHAR(*s++); |
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311 } else |
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312 PUSHCHAR(*s++); |
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313 } |
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314 PUSHCHAR(0); |
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315 |
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316 return result; |
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317 } |
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318 |
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319 |
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320 char *doubleDecodeStr(const char *str) |
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321 { |
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322 char *res, *tmp; |
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323 |
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324 if ((tmp = decodeStr1(str)) == NULL) |
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325 return NULL; |
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326 |
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327 res = decodeStr2(tmp); |
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328 th_free(tmp); |
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329 |
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330 return res; |
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331 } |
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332 |
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333 |
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334 char *doubleEncodeStr(const char *str) |
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335 { |
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336 char *res, *tmp; |
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337 |
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338 if ((tmp = encodeStr2(str)) == NULL) |
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339 return NULL; |
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340 |
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341 res = encodeStr1(tmp); |
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342 th_free(tmp); |
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343 |
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344 return res; |
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345 } |
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346 |
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347 |
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348 BOOL sendUserMsg(const int sock, const char *user, const char *fmt, ...) |
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349 { |
71
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350 char tmpBuf[SET_BUFSIZE], tmpBuf2[SET_BUFSIZE + 256]; |
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351 int n; |
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352 va_list ap; |
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353 |
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354 va_start(ap, fmt); |
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355 n = vsnprintf(tmpBuf, sizeof(tmpBuf), fmt, ap); |
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356 va_end(ap); |
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357 |
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358 if (n < 0) return FALSE; |
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359 |
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360 snprintf(tmpBuf2, sizeof(tmpBuf2), |
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361 "<USER>%s</USER><MESSAGE>%s</MESSAGE>", |
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362 user, tmpBuf); |
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363 |
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364 return sendToSocket(sock, tmpBuf2, strlen(tmpBuf2) + 1); |
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365 } |
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366 |
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367 |
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368 nn_ringbuf_t * newRingBuf(const size_t size) |
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369 { |
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370 nn_ringbuf_t *res = th_calloc(1, sizeof(nn_ringbuf_t)); |
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371 |
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372 res->data = (char **) th_malloc(size * sizeof(char *)); |
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373 res->size = size; |
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374 res->n = 0; |
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375 |
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376 return res; |
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377 } |
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378 |
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379 |
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380 void freeRingBuf(nn_ringbuf_t *buf) |
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381 { |
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382 size_t i; |
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383 |
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384 for (i = 0; i < buf->n; i++) |
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385 th_free(buf->data[i]); |
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386 |
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387 th_free(buf->data); |
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388 th_free(buf); |
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389 } |
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390 |
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391 |
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392 void addRingBuf(nn_ringbuf_t *buf, const char *str) |
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393 { |
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394 if (buf->n < buf->size) { |
79 | 395 buf->data[buf->n] = th_strdup(str); |
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396 buf->n++; |
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397 } else { |
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398 th_free(buf->data[0]); |
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399 memmove(&(buf->data[0]), &(buf->data[1]), buf->size - 1); |
79 | 400 buf->data[buf->size - 1] = th_strdup(str); |
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401 } |
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402 } |
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403 |
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404 |
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405 int writeBuf(nn_editbuf_t *buf, ssize_t pos, int ch) |
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406 { |
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407 /* Check arguments */ |
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408 if (buf->len+1 >= buf->size) return -3; |
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409 |
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410 if (pos < 0) |
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411 return -1; |
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412 else if (pos >= buf->len) { |
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413 buf->data[buf->len++] = ch; |
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414 } else { |
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415 buf->data[pos] = ch; |
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416 } |
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417 return 0; |
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418 } |
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419 |
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420 |
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421 int insertBuf(nn_editbuf_t *buf, ssize_t pos, int ch) |
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422 { |
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423 /* Check arguments */ |
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424 if (buf->len+1 >= buf->size) return -3; |
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425 |
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426 if (pos < 0) |
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427 return -1; |
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428 else if (pos >= buf->len) { |
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429 buf->data[buf->len] = ch; |
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430 } else { |
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431 memmove(&(buf->data[pos+1]), &(buf->data[pos]), buf->len - pos + 1); |
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432 buf->data[pos] = ch; |
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433 } |
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434 buf->len++; |
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435 return 0; |
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436 } |
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437 |
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438 |
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439 int deleteBuf(nn_editbuf_t *buf, ssize_t pos) |
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440 { |
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441 /* Check arguments */ |
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442 if (pos < 0) |
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443 return -1; |
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444 else if (pos < buf->len) { |
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445 memmove(&(buf->data[pos]), &(buf->data[pos+1]), buf->len - pos); |
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446 buf->len--; |
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447 return 0; |
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448 } else |
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449 return -2; |
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450 } |
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451 |
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452 |
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453 void clearBuf(nn_editbuf_t *buf) |
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454 { |
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455 buf->len = 0; |
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456 buf->pos = 0; |
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457 } |
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458 |
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459 |
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460 nn_editbuf_t * newBuf(ssize_t n) |
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461 { |
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462 nn_editbuf_t *res = th_calloc(1, sizeof(nn_editbuf_t)); |
71
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463 |
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464 res->data = (char *) th_malloc(n); |
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465 res->size = n; |
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466 |
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467 return res; |
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468 } |
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469 |
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470 |
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471 void freeBuf(nn_editbuf_t *buf) |
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472 { |
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473 if (buf) { |
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474 th_free(buf->data); |
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475 th_free(buf); |
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476 } |
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477 } |
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478 |
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479 |
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480 nn_editbuf_t * copyBuf(nn_editbuf_t *src) |
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481 { |
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482 nn_editbuf_t *res; |
71
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483 |
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484 assert(src != NULL); |
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485 |
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486 if (src == NULL) return NULL; |
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487 |
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488 if ((res = newBuf(src->size)) == NULL) |
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489 return NULL; |
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490 |
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491 memcpy(res->data, src->data, src->size); |
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492 res->pos = res->len = src->len; |
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493 |
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494 return res; |
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495 } |
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496 |
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497 |
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498 void setBufPos(nn_editbuf_t *buf, ssize_t pos) |
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499 { |
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500 /* Check arguments */ |
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501 if (pos < 0) |
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502 buf->pos = 0; |
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503 else if (pos >= buf->len) |
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504 buf->pos = buf->len; |
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505 else |
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506 buf->pos = pos; |
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507 } |
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508 |