290
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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660
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4 * Copyright (C) Nginx, Inc.
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290
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5 */
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6
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7
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8 #include <ngx_config.h>
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9 #include <ngx_core.h>
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10 #include <ngx_event.h>
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11 #include <ngx_mail.h>
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682
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12 #include <ngx_mail_pop3_module.h>
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13 #include <ngx_mail_imap_module.h>
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14 #include <ngx_mail_smtp_module.h>
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290
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15
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16
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336
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17 ngx_int_t
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18 ngx_mail_pop3_parse_command(ngx_mail_session_t *s)
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290
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19 {
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20 u_char ch, *p, *c, c0, c1, c2, c3;
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21 ngx_str_t *arg;
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22 enum {
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23 sw_start = 0,
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24 sw_spaces_before_argument,
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25 sw_argument,
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26 sw_almost_done
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27 } state;
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28
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29 state = s->state;
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30
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31 for (p = s->buffer->pos; p < s->buffer->last; p++) {
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32 ch = *p;
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33
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34 switch (state) {
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35
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36 /* POP3 command */
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37 case sw_start:
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38 if (ch == ' ' || ch == CR || ch == LF) {
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39 c = s->buffer->start;
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40
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41 if (p - c == 4) {
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42
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43 c0 = ngx_toupper(c[0]);
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44 c1 = ngx_toupper(c[1]);
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45 c2 = ngx_toupper(c[2]);
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46 c3 = ngx_toupper(c[3]);
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47
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48 if (c0 == 'U' && c1 == 'S' && c2 == 'E' && c3 == 'R')
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49 {
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50 s->command = NGX_POP3_USER;
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51
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52 } else if (c0 == 'P' && c1 == 'A' && c2 == 'S' && c3 == 'S')
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53 {
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54 s->command = NGX_POP3_PASS;
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55
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56 } else if (c0 == 'A' && c1 == 'P' && c2 == 'O' && c3 == 'P')
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57 {
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58 s->command = NGX_POP3_APOP;
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59
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60 } else if (c0 == 'Q' && c1 == 'U' && c2 == 'I' && c3 == 'T')
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61 {
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62 s->command = NGX_POP3_QUIT;
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63
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64 } else if (c0 == 'C' && c1 == 'A' && c2 == 'P' && c3 == 'A')
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65 {
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66 s->command = NGX_POP3_CAPA;
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67
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68 } else if (c0 == 'A' && c1 == 'U' && c2 == 'T' && c3 == 'H')
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69 {
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70 s->command = NGX_POP3_AUTH;
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71
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72 } else if (c0 == 'N' && c1 == 'O' && c2 == 'O' && c3 == 'P')
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73 {
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74 s->command = NGX_POP3_NOOP;
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75 #if (NGX_MAIL_SSL)
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76 } else if (c0 == 'S' && c1 == 'T' && c2 == 'L' && c3 == 'S')
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77 {
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78 s->command = NGX_POP3_STLS;
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79 #endif
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80 } else {
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81 goto invalid;
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82 }
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83
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84 } else {
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85 goto invalid;
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86 }
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87
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88 switch (ch) {
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89 case ' ':
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90 state = sw_spaces_before_argument;
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91 break;
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92 case CR:
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93 state = sw_almost_done;
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94 break;
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95 case LF:
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96 goto done;
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97 }
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98 break;
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99 }
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100
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101 if ((ch < 'A' || ch > 'Z') && (ch < 'a' || ch > 'z')) {
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102 goto invalid;
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103 }
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104
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105 break;
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106
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107 case sw_spaces_before_argument:
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108 switch (ch) {
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109 case ' ':
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110 break;
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111 case CR:
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112 state = sw_almost_done;
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113 s->arg_end = p;
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114 break;
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115 case LF:
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116 s->arg_end = p;
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117 goto done;
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118 default:
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119 if (s->args.nelts <= 2) {
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120 state = sw_argument;
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121 s->arg_start = p;
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122 break;
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123 }
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124 goto invalid;
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125 }
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126 break;
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127
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128 case sw_argument:
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129 switch (ch) {
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130
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131 case ' ':
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132
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133 /*
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134 * the space should be considered as part of the at username
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135 * or password, but not of argument in other commands
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136 */
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137
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138 if (s->command == NGX_POP3_USER
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139 || s->command == NGX_POP3_PASS)
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140 {
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141 break;
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142 }
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143
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144 /* fall through */
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145
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146 case CR:
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147 case LF:
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148 arg = ngx_array_push(&s->args);
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149 if (arg == NULL) {
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150 return NGX_ERROR;
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151 }
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152 arg->len = p - s->arg_start;
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153 arg->data = s->arg_start;
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154 s->arg_start = NULL;
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155
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156 switch (ch) {
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157 case ' ':
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158 state = sw_spaces_before_argument;
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159 break;
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160 case CR:
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161 state = sw_almost_done;
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162 break;
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163 case LF:
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164 goto done;
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165 }
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166 break;
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167
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168 default:
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169 break;
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170 }
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171 break;
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172
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173 case sw_almost_done:
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174 switch (ch) {
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175 case LF:
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176 goto done;
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177 default:
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178 goto invalid;
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179 }
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180 }
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181 }
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182
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183 s->buffer->pos = p;
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184 s->state = state;
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185
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186 return NGX_AGAIN;
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187
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188 done:
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189
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190 s->buffer->pos = p + 1;
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191
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192 if (s->arg_start) {
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193 arg = ngx_array_push(&s->args);
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194 if (arg == NULL) {
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195 return NGX_ERROR;
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196 }
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197 arg->len = s->arg_end - s->arg_start;
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198 arg->data = s->arg_start;
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199 s->arg_start = NULL;
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200 }
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201
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202 s->state = (s->command != NGX_POP3_AUTH) ? sw_start : sw_argument;
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203
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204 return NGX_OK;
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205
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206 invalid:
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207
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208 s->state = sw_start;
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209 s->arg_start = NULL;
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210
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211 return NGX_MAIL_PARSE_INVALID_COMMAND;
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212 }
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213
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214
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336
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215 ngx_int_t
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216 ngx_mail_imap_parse_command(ngx_mail_session_t *s)
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290
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217 {
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218 u_char ch, *p, *c;
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219 ngx_str_t *arg;
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220 enum {
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221 sw_start = 0,
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222 sw_spaces_before_command,
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223 sw_command,
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224 sw_spaces_before_argument,
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225 sw_argument,
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226 sw_backslash,
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227 sw_literal,
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228 sw_no_sync_literal_argument,
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229 sw_start_literal_argument,
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230 sw_literal_argument,
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231 sw_end_literal_argument,
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232 sw_almost_done
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233 } state;
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234
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235 state = s->state;
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236
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237 for (p = s->buffer->pos; p < s->buffer->last; p++) {
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238 ch = *p;
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239
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240 switch (state) {
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241
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242 /* IMAP tag */
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243 case sw_start:
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244 switch (ch) {
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245 case ' ':
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246 s->tag.len = p - s->buffer->start + 1;
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247 s->tag.data = s->buffer->start;
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248 state = sw_spaces_before_command;
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249 break;
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250 case CR:
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251 s->state = sw_start;
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252 return NGX_MAIL_PARSE_INVALID_COMMAND;
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253 case LF:
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254 s->state = sw_start;
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255 return NGX_MAIL_PARSE_INVALID_COMMAND;
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256 }
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257 break;
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258
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259 case sw_spaces_before_command:
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260 switch (ch) {
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261 case ' ':
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262 break;
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263 case CR:
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264 s->state = sw_start;
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265 return NGX_MAIL_PARSE_INVALID_COMMAND;
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266 case LF:
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267 s->state = sw_start;
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268 return NGX_MAIL_PARSE_INVALID_COMMAND;
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269 default:
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270 s->cmd_start = p;
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271 state = sw_command;
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272 break;
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273 }
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274 break;
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275
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276 case sw_command:
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277 if (ch == ' ' || ch == CR || ch == LF) {
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278
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279 c = s->cmd_start;
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280
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281 switch (p - c) {
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282
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283 case 4:
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284 if ((c[0] == 'N' || c[0] == 'n')
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285 && (c[1] == 'O'|| c[1] == 'o')
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286 && (c[2] == 'O'|| c[2] == 'o')
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287 && (c[3] == 'P'|| c[3] == 'p'))
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288 {
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289 s->command = NGX_IMAP_NOOP;
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290
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291 } else {
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292 goto invalid;
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293 }
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294 break;
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295
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296 case 5:
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297 if ((c[0] == 'L'|| c[0] == 'l')
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298 && (c[1] == 'O'|| c[1] == 'o')
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299 && (c[2] == 'G'|| c[2] == 'g')
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300 && (c[3] == 'I'|| c[3] == 'i')
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301 && (c[4] == 'N'|| c[4] == 'n'))
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302 {
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303 s->command = NGX_IMAP_LOGIN;
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304
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305 } else {
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306 goto invalid;
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307 }
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308 break;
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309
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310 case 6:
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311 if ((c[0] == 'L'|| c[0] == 'l')
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312 && (c[1] == 'O'|| c[1] == 'o')
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313 && (c[2] == 'G'|| c[2] == 'g')
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314 && (c[3] == 'O'|| c[3] == 'o')
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315 && (c[4] == 'U'|| c[4] == 'u')
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316 && (c[5] == 'T'|| c[5] == 't'))
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317 {
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318 s->command = NGX_IMAP_LOGOUT;
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319
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320 } else {
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321 goto invalid;
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322 }
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323 break;
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324
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325 #if (NGX_MAIL_SSL)
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326 case 8:
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327 if ((c[0] == 'S'|| c[0] == 's')
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328 && (c[1] == 'T'|| c[1] == 't')
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329 && (c[2] == 'A'|| c[2] == 'a')
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330 && (c[3] == 'R'|| c[3] == 'r')
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331 && (c[4] == 'T'|| c[4] == 't')
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332 && (c[5] == 'T'|| c[5] == 't')
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333 && (c[6] == 'L'|| c[6] == 'l')
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334 && (c[7] == 'S'|| c[7] == 's'))
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335 {
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336 s->command = NGX_IMAP_STARTTLS;
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337
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338 } else {
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339 goto invalid;
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340 }
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341 break;
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342 #endif
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343
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344 case 10:
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345 if ((c[0] == 'C'|| c[0] == 'c')
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346 && (c[1] == 'A'|| c[1] == 'a')
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347 && (c[2] == 'P'|| c[2] == 'p')
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348 && (c[3] == 'A'|| c[3] == 'a')
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349 && (c[4] == 'B'|| c[4] == 'b')
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350 && (c[5] == 'I'|| c[5] == 'i')
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351 && (c[6] == 'L'|| c[6] == 'l')
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352 && (c[7] == 'I'|| c[7] == 'i')
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353 && (c[8] == 'T'|| c[8] == 't')
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354 && (c[9] == 'Y'|| c[9] == 'y'))
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355 {
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356 s->command = NGX_IMAP_CAPABILITY;
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357
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358 } else {
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359 goto invalid;
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360 }
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361 break;
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362
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322
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363 case 12:
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364 if ((c[0] == 'A'|| c[0] == 'a')
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365 && (c[1] == 'U'|| c[1] == 'u')
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366 && (c[2] == 'T'|| c[2] == 't')
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367 && (c[3] == 'H'|| c[3] == 'h')
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368 && (c[4] == 'E'|| c[4] == 'e')
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369 && (c[5] == 'N'|| c[5] == 'n')
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370 && (c[6] == 'T'|| c[6] == 't')
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371 && (c[7] == 'I'|| c[7] == 'i')
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372 && (c[8] == 'C'|| c[8] == 'c')
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373 && (c[9] == 'A'|| c[9] == 'a')
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374 && (c[10] == 'T'|| c[10] == 't')
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375 && (c[11] == 'E'|| c[11] == 'e'))
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376 {
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377 s->command = NGX_IMAP_AUTHENTICATE;
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378
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379 } else {
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380 goto invalid;
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381 }
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382 break;
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383
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290
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384 default:
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385 goto invalid;
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386 }
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387
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388 switch (ch) {
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389 case ' ':
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390 state = sw_spaces_before_argument;
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391 break;
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392 case CR:
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393 state = sw_almost_done;
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394 break;
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395 case LF:
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396 goto done;
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397 }
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398 break;
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399 }
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400
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401 if ((ch < 'A' || ch > 'Z') && (ch < 'a' || ch > 'z')) {
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402 goto invalid;
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403 }
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404
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405 break;
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406
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407 case sw_spaces_before_argument:
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408 switch (ch) {
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409 case ' ':
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410 break;
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411 case CR:
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412 state = sw_almost_done;
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413 s->arg_end = p;
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414 break;
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415 case LF:
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416 s->arg_end = p;
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417 goto done;
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418 case '"':
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419 if (s->args.nelts <= 2) {
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420 s->quoted = 1;
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421 s->arg_start = p + 1;
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422 state = sw_argument;
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423 break;
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424 }
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425 goto invalid;
|
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426 case '{':
|
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427 if (s->args.nelts <= 2) {
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428 state = sw_literal;
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429 break;
|
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430 }
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431 goto invalid;
|
|
432 default:
|
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433 if (s->args.nelts <= 2) {
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434 s->arg_start = p;
|
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435 state = sw_argument;
|
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436 break;
|
|
437 }
|
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438 goto invalid;
|
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439 }
|
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440 break;
|
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441
|
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442 case sw_argument:
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328
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443 if (ch == ' ' && s->quoted) {
|
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444 break;
|
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445 }
|
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446
|
290
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447 switch (ch) {
|
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448 case '"':
|
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449 if (!s->quoted) {
|
|
450 break;
|
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451 }
|
|
452 s->quoted = 0;
|
|
453 /* fall through */
|
|
454 case ' ':
|
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455 case CR:
|
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456 case LF:
|
|
457 arg = ngx_array_push(&s->args);
|
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458 if (arg == NULL) {
|
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459 return NGX_ERROR;
|
|
460 }
|
|
461 arg->len = p - s->arg_start;
|
|
462 arg->data = s->arg_start;
|
|
463 s->arg_start = NULL;
|
|
464
|
|
465 switch (ch) {
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466 case '"':
|
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467 case ' ':
|
|
468 state = sw_spaces_before_argument;
|
|
469 break;
|
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470 case CR:
|
|
471 state = sw_almost_done;
|
|
472 break;
|
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473 case LF:
|
|
474 goto done;
|
|
475 }
|
|
476 break;
|
|
477 case '\\':
|
|
478 if (s->quoted) {
|
|
479 s->backslash = 1;
|
|
480 state = sw_backslash;
|
|
481 }
|
|
482 break;
|
|
483 }
|
|
484 break;
|
|
485
|
|
486 case sw_backslash:
|
|
487 switch (ch) {
|
|
488 case CR:
|
|
489 case LF:
|
|
490 goto invalid;
|
|
491 default:
|
|
492 state = sw_argument;
|
|
493 }
|
|
494 break;
|
|
495
|
|
496 case sw_literal:
|
|
497 if (ch >= '0' && ch <= '9') {
|
|
498 s->literal_len = s->literal_len * 10 + (ch - '0');
|
|
499 break;
|
|
500 }
|
|
501 if (ch == '}') {
|
|
502 state = sw_start_literal_argument;
|
|
503 break;
|
|
504 }
|
|
505 if (ch == '+') {
|
|
506 state = sw_no_sync_literal_argument;
|
|
507 break;
|
|
508 }
|
|
509 goto invalid;
|
|
510
|
|
511 case sw_no_sync_literal_argument:
|
|
512 if (ch == '}') {
|
|
513 s->no_sync_literal = 1;
|
|
514 state = sw_start_literal_argument;
|
|
515 break;
|
|
516 }
|
|
517 goto invalid;
|
|
518
|
|
519 case sw_start_literal_argument:
|
|
520 switch (ch) {
|
|
521 case CR:
|
|
522 break;
|
|
523 case LF:
|
|
524 s->buffer->pos = p + 1;
|
|
525 s->arg_start = p + 1;
|
|
526 if (s->no_sync_literal == 0) {
|
|
527 s->state = sw_literal_argument;
|
|
528 return NGX_IMAP_NEXT;
|
|
529 }
|
|
530 state = sw_literal_argument;
|
|
531 s->no_sync_literal = 0;
|
|
532 break;
|
|
533 default:
|
|
534 goto invalid;
|
|
535 }
|
|
536 break;
|
|
537
|
|
538 case sw_literal_argument:
|
|
539 if (s->literal_len && --s->literal_len) {
|
|
540 break;
|
|
541 }
|
|
542
|
|
543 arg = ngx_array_push(&s->args);
|
|
544 if (arg == NULL) {
|
|
545 return NGX_ERROR;
|
|
546 }
|
|
547 arg->len = p + 1 - s->arg_start;
|
|
548 arg->data = s->arg_start;
|
|
549 s->arg_start = NULL;
|
|
550 state = sw_end_literal_argument;
|
|
551
|
|
552 break;
|
|
553
|
|
554 case sw_end_literal_argument:
|
|
555 switch (ch) {
|
|
556 case '{':
|
|
557 if (s->args.nelts <= 2) {
|
|
558 state = sw_literal;
|
|
559 break;
|
|
560 }
|
|
561 goto invalid;
|
|
562 case CR:
|
|
563 state = sw_almost_done;
|
|
564 break;
|
|
565 case LF:
|
|
566 goto done;
|
|
567 default:
|
|
568 state = sw_spaces_before_argument;
|
|
569 break;
|
|
570 }
|
|
571 break;
|
|
572
|
|
573 case sw_almost_done:
|
|
574 switch (ch) {
|
|
575 case LF:
|
|
576 goto done;
|
|
577 default:
|
|
578 goto invalid;
|
|
579 }
|
|
580 }
|
|
581 }
|
|
582
|
|
583 s->buffer->pos = p;
|
|
584 s->state = state;
|
|
585
|
|
586 return NGX_AGAIN;
|
|
587
|
|
588 done:
|
|
589
|
|
590 s->buffer->pos = p + 1;
|
|
591
|
|
592 if (s->arg_start) {
|
|
593 arg = ngx_array_push(&s->args);
|
|
594 if (arg == NULL) {
|
|
595 return NGX_ERROR;
|
|
596 }
|
|
597 arg->len = s->arg_end - s->arg_start;
|
|
598 arg->data = s->arg_start;
|
|
599
|
|
600 s->arg_start = NULL;
|
|
601 s->cmd_start = NULL;
|
|
602 s->quoted = 0;
|
|
603 s->no_sync_literal = 0;
|
|
604 s->literal_len = 0;
|
|
605 }
|
|
606
|
322
|
607 s->state = (s->command != NGX_IMAP_AUTHENTICATE) ? sw_start : sw_argument;
|
290
|
608
|
|
609 return NGX_OK;
|
|
610
|
|
611 invalid:
|
|
612
|
|
613 s->state = sw_start;
|
|
614 s->quoted = 0;
|
|
615 s->no_sync_literal = 0;
|
|
616 s->literal_len = 0;
|
|
617
|
|
618 return NGX_MAIL_PARSE_INVALID_COMMAND;
|
|
619 }
|
|
620
|
|
621
|
336
|
622 ngx_int_t
|
|
623 ngx_mail_smtp_parse_command(ngx_mail_session_t *s)
|
290
|
624 {
|
|
625 u_char ch, *p, *c, c0, c1, c2, c3;
|
|
626 ngx_str_t *arg;
|
|
627 enum {
|
|
628 sw_start = 0,
|
|
629 sw_spaces_before_argument,
|
|
630 sw_argument,
|
|
631 sw_almost_done
|
|
632 } state;
|
|
633
|
|
634 state = s->state;
|
|
635
|
|
636 for (p = s->buffer->pos; p < s->buffer->last; p++) {
|
|
637 ch = *p;
|
|
638
|
|
639 switch (state) {
|
|
640
|
|
641 /* SMTP command */
|
|
642 case sw_start:
|
|
643 if (ch == ' ' || ch == CR || ch == LF) {
|
|
644 c = s->buffer->start;
|
|
645
|
|
646 if (p - c == 4) {
|
|
647
|
|
648 c0 = ngx_toupper(c[0]);
|
|
649 c1 = ngx_toupper(c[1]);
|
|
650 c2 = ngx_toupper(c[2]);
|
|
651 c3 = ngx_toupper(c[3]);
|
|
652
|
|
653 if (c0 == 'H' && c1 == 'E' && c2 == 'L' && c3 == 'O')
|
|
654 {
|
|
655 s->command = NGX_SMTP_HELO;
|
|
656
|
|
657 } else if (c0 == 'E' && c1 == 'H' && c2 == 'L' && c3 == 'O')
|
|
658 {
|
|
659 s->command = NGX_SMTP_EHLO;
|
|
660
|
|
661 } else if (c0 == 'Q' && c1 == 'U' && c2 == 'I' && c3 == 'T')
|
|
662 {
|
|
663 s->command = NGX_SMTP_QUIT;
|
|
664
|
|
665 } else if (c0 == 'A' && c1 == 'U' && c2 == 'T' && c3 == 'H')
|
|
666 {
|
|
667 s->command = NGX_SMTP_AUTH;
|
|
668
|
|
669 } else if (c0 == 'N' && c1 == 'O' && c2 == 'O' && c3 == 'P')
|
|
670 {
|
|
671 s->command = NGX_SMTP_NOOP;
|
|
672
|
|
673 } else if (c0 == 'M' && c1 == 'A' && c2 == 'I' && c3 == 'L')
|
|
674 {
|
|
675 s->command = NGX_SMTP_MAIL;
|
|
676
|
|
677 } else if (c0 == 'R' && c1 == 'S' && c2 == 'E' && c3 == 'T')
|
|
678 {
|
|
679 s->command = NGX_SMTP_RSET;
|
|
680
|
322
|
681 } else if (c0 == 'R' && c1 == 'C' && c2 == 'P' && c3 == 'T')
|
|
682 {
|
|
683 s->command = NGX_SMTP_RCPT;
|
|
684
|
|
685 } else if (c0 == 'V' && c1 == 'R' && c2 == 'F' && c3 == 'Y')
|
|
686 {
|
|
687 s->command = NGX_SMTP_VRFY;
|
|
688
|
|
689 } else if (c0 == 'E' && c1 == 'X' && c2 == 'P' && c3 == 'N')
|
|
690 {
|
|
691 s->command = NGX_SMTP_EXPN;
|
|
692
|
|
693 } else if (c0 == 'H' && c1 == 'E' && c2 == 'L' && c3 == 'P')
|
|
694 {
|
|
695 s->command = NGX_SMTP_HELP;
|
|
696
|
290
|
697 } else {
|
|
698 goto invalid;
|
|
699 }
|
322
|
700 #if (NGX_MAIL_SSL)
|
|
701 } else if (p - c == 8) {
|
290
|
702
|
322
|
703 if ((c[0] == 'S'|| c[0] == 's')
|
|
704 && (c[1] == 'T'|| c[1] == 't')
|
|
705 && (c[2] == 'A'|| c[2] == 'a')
|
|
706 && (c[3] == 'R'|| c[3] == 'r')
|
|
707 && (c[4] == 'T'|| c[4] == 't')
|
|
708 && (c[5] == 'T'|| c[5] == 't')
|
|
709 && (c[6] == 'L'|| c[6] == 'l')
|
|
710 && (c[7] == 'S'|| c[7] == 's'))
|
|
711 {
|
|
712 s->command = NGX_SMTP_STARTTLS;
|
|
713
|
|
714 } else {
|
|
715 goto invalid;
|
|
716 }
|
|
717 #endif
|
290
|
718 } else {
|
|
719 goto invalid;
|
|
720 }
|
|
721
|
|
722 switch (ch) {
|
|
723 case ' ':
|
|
724 state = sw_spaces_before_argument;
|
|
725 break;
|
|
726 case CR:
|
|
727 state = sw_almost_done;
|
|
728 break;
|
|
729 case LF:
|
|
730 goto done;
|
|
731 }
|
|
732 break;
|
|
733 }
|
|
734
|
|
735 if ((ch < 'A' || ch > 'Z') && (ch < 'a' || ch > 'z')) {
|
|
736 goto invalid;
|
|
737 }
|
|
738
|
|
739 break;
|
|
740
|
|
741 case sw_spaces_before_argument:
|
|
742 switch (ch) {
|
|
743 case ' ':
|
|
744 break;
|
|
745 case CR:
|
|
746 state = sw_almost_done;
|
|
747 s->arg_end = p;
|
|
748 break;
|
|
749 case LF:
|
|
750 s->arg_end = p;
|
|
751 goto done;
|
|
752 default:
|
420
|
753 if (s->args.nelts <= 10) {
|
290
|
754 state = sw_argument;
|
|
755 s->arg_start = p;
|
|
756 break;
|
|
757 }
|
|
758 goto invalid;
|
|
759 }
|
|
760 break;
|
|
761
|
|
762 case sw_argument:
|
|
763 switch (ch) {
|
|
764 case ' ':
|
|
765 case CR:
|
|
766 case LF:
|
|
767 arg = ngx_array_push(&s->args);
|
|
768 if (arg == NULL) {
|
|
769 return NGX_ERROR;
|
|
770 }
|
|
771 arg->len = p - s->arg_start;
|
|
772 arg->data = s->arg_start;
|
|
773 s->arg_start = NULL;
|
|
774
|
|
775 switch (ch) {
|
|
776 case ' ':
|
|
777 state = sw_spaces_before_argument;
|
|
778 break;
|
|
779 case CR:
|
|
780 state = sw_almost_done;
|
|
781 break;
|
|
782 case LF:
|
|
783 goto done;
|
|
784 }
|
|
785 break;
|
|
786
|
|
787 default:
|
|
788 break;
|
|
789 }
|
|
790 break;
|
|
791
|
|
792 case sw_almost_done:
|
|
793 switch (ch) {
|
|
794 case LF:
|
|
795 goto done;
|
|
796 default:
|
|
797 goto invalid;
|
|
798 }
|
|
799 }
|
|
800 }
|
|
801
|
|
802 s->buffer->pos = p;
|
|
803 s->state = state;
|
|
804
|
|
805 return NGX_AGAIN;
|
|
806
|
|
807 done:
|
|
808
|
|
809 s->buffer->pos = p + 1;
|
|
810
|
|
811 if (s->arg_start) {
|
|
812 arg = ngx_array_push(&s->args);
|
|
813 if (arg == NULL) {
|
|
814 return NGX_ERROR;
|
|
815 }
|
|
816 arg->len = s->arg_end - s->arg_start;
|
|
817 arg->data = s->arg_start;
|
|
818 s->arg_start = NULL;
|
|
819 }
|
|
820
|
|
821 s->state = (s->command != NGX_SMTP_AUTH) ? sw_start : sw_argument;
|
|
822
|
|
823 return NGX_OK;
|
|
824
|
|
825 invalid:
|
|
826
|
|
827 s->state = sw_start;
|
|
828 s->arg_start = NULL;
|
|
829
|
|
830 return NGX_MAIL_PARSE_INVALID_COMMAND;
|
|
831 }
|
336
|
832
|
|
833
|
|
834 ngx_int_t
|
|
835 ngx_mail_auth_parse(ngx_mail_session_t *s, ngx_connection_t *c)
|
|
836 {
|
|
837 ngx_str_t *arg;
|
|
838
|
|
839 #if (NGX_MAIL_SSL)
|
|
840 if (ngx_mail_starttls_only(s, c)) {
|
|
841 return NGX_MAIL_PARSE_INVALID_COMMAND;
|
|
842 }
|
|
843 #endif
|
|
844
|
|
845 arg = s->args.elts;
|
|
846
|
|
847 if (arg[0].len == 5) {
|
|
848
|
|
849 if (ngx_strncasecmp(arg[0].data, (u_char *) "LOGIN", 5) == 0) {
|
|
850
|
|
851 if (s->args.nelts == 1) {
|
|
852 return NGX_MAIL_AUTH_LOGIN;
|
|
853 }
|
|
854
|
444
|
855 if (s->args.nelts == 2) {
|
|
856 return NGX_MAIL_AUTH_LOGIN_USERNAME;
|
|
857 }
|
|
858
|
336
|
859 return NGX_MAIL_PARSE_INVALID_COMMAND;
|
|
860 }
|
|
861
|
|
862 if (ngx_strncasecmp(arg[0].data, (u_char *) "PLAIN", 5) == 0) {
|
|
863
|
|
864 if (s->args.nelts == 1) {
|
|
865 return NGX_MAIL_AUTH_PLAIN;
|
|
866 }
|
|
867
|
|
868 if (s->args.nelts == 2) {
|
|
869 return ngx_mail_auth_plain(s, c, 1);
|
|
870 }
|
|
871 }
|
|
872
|
|
873 return NGX_MAIL_PARSE_INVALID_COMMAND;
|
|
874 }
|
|
875
|
|
876 if (arg[0].len == 8) {
|
|
877
|
|
878 if (s->args.nelts != 1) {
|
|
879 return NGX_MAIL_PARSE_INVALID_COMMAND;
|
|
880 }
|
|
881
|
|
882 if (ngx_strncasecmp(arg[0].data, (u_char *) "CRAM-MD5", 8) == 0) {
|
|
883 return NGX_MAIL_AUTH_CRAM_MD5;
|
|
884 }
|
|
885 }
|
|
886
|
|
887 return NGX_MAIL_PARSE_INVALID_COMMAND;
|
|
888 }
|