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pasterd: add basic routes
author David Demelier <markand@malikania.fr>
date Tue, 04 Feb 2020 16:44:43 +0100
parents
children 65607ae124b1
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1 /*
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2 * http.c -- HTTP parsing and rendering
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3 *
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4 * Copyright (c) 2020 David Demelier <markand@malikania.fr>
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5 *
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6 * Permission to use, copy, modify, and/or distribute this software for any
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7 * purpose with or without fee is hereby granted, provided that the above
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8 * copyright notice and this permission notice appear in all copies.
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9 *
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10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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17 */
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18
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19 #include <sys/types.h>
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20 #include <assert.h>
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21 #include <limits.h>
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22 #include <stdarg.h>
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23 #include <stdint.h>
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24 #include <stdio.h>
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25 #include <stdlib.h>
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26 #include <unistd.h>
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27
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28 #include <kcgi.h>
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29
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30 #include "config.h"
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31 #include "database.h"
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32 #include "http.h"
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33 #include "log.h"
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34 #include "paste.h"
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35 #include "util.h"
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36
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37 static void page_index(struct kreq *);
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38 static void page_new(struct kreq *);
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39 static void page_fork(struct kreq *);
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40 static void page_paste(struct kreq *);
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41 static void page_about(struct kreq *);
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42 static void page_download(struct kreq *);
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43
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44 enum page {
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45 PAGE_INDEX,
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46 PAGE_NEW,
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47 PAGE_FORK,
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48 PAGE_PASTE,
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49 PAGE_ABOUT,
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50 PAGE_DOWNLOAD,
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51 PAGE_LAST /* Not used. */
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52 };
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53
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54 static const char *pages[] = {
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55 [PAGE_INDEX] = "",
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56 [PAGE_NEW] = "new",
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57 [PAGE_FORK] = "fork",
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58 [PAGE_PASTE] = "paste",
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59 [PAGE_ABOUT] = "about",
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60 [PAGE_DOWNLOAD] = "download",
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61 };
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62
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63 static void (*handlers[])(struct kreq *req) = {
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64 [PAGE_INDEX] = page_index,
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65 [PAGE_NEW] = page_new,
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66 [PAGE_FORK] = page_fork,
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67 [PAGE_PASTE] = page_paste,
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68 [PAGE_ABOUT] = page_about,
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69 [PAGE_DOWNLOAD] = page_download
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70 };
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71
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72 struct tmpl_index {
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73 struct kreq *req;
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74 struct paste pastes[10];
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75 size_t count;
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76 size_t current;
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77 };
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78
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79 struct tmpl_paste {
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80 struct kreq *req;
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81 struct paste paste;
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82 };
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83
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84 static const char *
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85 template(const char *filename)
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86 {
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87 /* Build path to the template file. */
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88 static char path[PATH_MAX];
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89
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90 snprintf(path, sizeof (path), "%s/%s", config.themedir, filename);
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91
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92 return path;
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93 }
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94
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95 static int
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96 tmpl_paste(size_t index, void *arg)
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97 {
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98 struct tmpl_paste *data = arg;
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99 struct paste *paste = &data->paste;
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100
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101 switch (index) {
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102 case 0:
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103 khttp_puts(data->req, paste->uuid);
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104 break;
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105 case 1:
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106 khttp_puts(data->req, paste->title);
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107 break;
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108 case 2:
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109 khttp_puts(data->req, paste->author);
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110 break;
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111 case 3:
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112 khttp_puts(data->req, paste->language);
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113 break;
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114 case 4:
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115 khttp_puts(data->req, paste->code);
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116 break;
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117 case 5:
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118 /* TODO: timestamp here. */
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119 khttp_puts(data->req, "TODO");
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120 break;
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121 case 6:
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122 khttp_puts(data->req, bprintf("%s", paste->visible ? "Yes" : "No"));
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123 break;
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124 case 7:
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125 /* TODO: convert time left. */
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126 khttp_puts(data->req, "TODO");
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127 break;
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128 default:
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129 break;
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130 }
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131
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132 return true;
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133 }
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134
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135 static int
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136 tmpl_index_pastes(size_t index, void *arg)
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137 {
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138 struct tmpl_index *data = arg;
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139 struct paste *paste = &data->pastes[data->current];
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140
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141 switch (index) {
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142 case 0:
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143 khttp_puts(data->req, paste->uuid);
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144 break;
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145 case 1:
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146 khttp_puts(data->req, paste->title);
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147 break;
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148 case 2:
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149 khttp_puts(data->req, paste->author);
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150 break;
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151 case 3:
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152 khttp_puts(data->req, paste->language);
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153 break;
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154 case 4:
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155 khttp_puts(data->req, bprintf("%d", paste->duration));
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156 break;
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parents:
diff changeset
157 default:
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parents:
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158 break;
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David Demelier <markand@malikania.fr>
parents:
diff changeset
159 }
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parents:
diff changeset
160
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parents:
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161 return true;
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David Demelier <markand@malikania.fr>
parents:
diff changeset
162 }
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parents:
diff changeset
163
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parents:
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164 static int
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David Demelier <markand@malikania.fr>
parents:
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165 tmpl_index(size_t index, void *arg)
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David Demelier <markand@malikania.fr>
parents:
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166 {
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David Demelier <markand@malikania.fr>
parents:
diff changeset
167 /* No check, only one index. */
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parents:
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168 struct tmpl_index *data = arg;
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parents:
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169 const char *keywords[] = {
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parents:
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170 "uuid",
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David Demelier <markand@malikania.fr>
parents:
diff changeset
171 "name",
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David Demelier <markand@malikania.fr>
parents:
diff changeset
172 "author",
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David Demelier <markand@malikania.fr>
parents:
diff changeset
173 "language",
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David Demelier <markand@malikania.fr>
parents:
diff changeset
174 "expiration"
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David Demelier <markand@malikania.fr>
parents:
diff changeset
175 };
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David Demelier <markand@malikania.fr>
parents:
diff changeset
176 struct ktemplate kt = {
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parents:
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177 .key = keywords,
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David Demelier <markand@malikania.fr>
parents:
diff changeset
178 .keysz = 5,
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David Demelier <markand@malikania.fr>
parents:
diff changeset
179 .arg = data,
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David Demelier <markand@malikania.fr>
parents:
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180 .cb = tmpl_index_pastes
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David Demelier <markand@malikania.fr>
parents:
diff changeset
181 };
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David Demelier <markand@malikania.fr>
parents:
diff changeset
182
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David Demelier <markand@malikania.fr>
parents:
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183 for (size_t i = 0; i < data->count; ++i) {
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parents:
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184 khttp_template(data->req, &kt, template("index-paste.html"));
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parents:
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185 data->current++;
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David Demelier <markand@malikania.fr>
parents:
diff changeset
186 }
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parents:
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187
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188 return true;
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David Demelier <markand@malikania.fr>
parents:
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189 }
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David Demelier <markand@malikania.fr>
parents:
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190
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parents:
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191 static void
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David Demelier <markand@malikania.fr>
parents:
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192 header(struct kreq *req)
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parents:
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193 {
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parents:
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194 khttp_template(req, NULL, template("header.html"));
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David Demelier <markand@malikania.fr>
parents:
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195 }
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David Demelier <markand@malikania.fr>
parents:
diff changeset
196
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David Demelier <markand@malikania.fr>
parents:
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197 static void
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David Demelier <markand@malikania.fr>
parents:
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198 footer(struct kreq *req)
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parents:
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199 {
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parents:
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200 khttp_template(req, NULL, template("footer.html"));
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David Demelier <markand@malikania.fr>
parents:
diff changeset
201 }
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parents:
diff changeset
202
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David Demelier <markand@malikania.fr>
parents:
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203 static void
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David Demelier <markand@malikania.fr>
parents:
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204 page_index(struct kreq *req)
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parents:
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205 {
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parents:
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206 struct tmpl_index data = {
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207 .req = req,
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David Demelier <markand@malikania.fr>
parents:
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208 .count = 10
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parents:
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209 };
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parents:
diff changeset
210
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parents:
diff changeset
211 khttp_head(req, kresps[KRESP_CONTENT_TYPE], "%s", kmimetypes[KMIME_TEXT_HTML]);
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parents:
diff changeset
212
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David Demelier <markand@malikania.fr>
parents:
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213 if (!database_recents(data.pastes, &data.count)) {
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David Demelier <markand@malikania.fr>
parents:
diff changeset
214 khttp_head(req, kresps[KRESP_STATUS], "%s", khttps[KHTTP_500]);
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parents:
diff changeset
215 khttp_body(req);
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parents:
diff changeset
216 khttp_template(req, NULL, template("500.html"));
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David Demelier <markand@malikania.fr>
parents:
diff changeset
217 } else {
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David Demelier <markand@malikania.fr>
parents:
diff changeset
218 const char *keywords[] = { "pastes" };
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David Demelier <markand@malikania.fr>
parents:
diff changeset
219 struct ktemplate kt = {
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parents:
diff changeset
220 .key = keywords,
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David Demelier <markand@malikania.fr>
parents:
diff changeset
221 .keysz = 1,
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David Demelier <markand@malikania.fr>
parents:
diff changeset
222 .arg = &data,
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David Demelier <markand@malikania.fr>
parents:
diff changeset
223 .cb = tmpl_index
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David Demelier <markand@malikania.fr>
parents:
diff changeset
224 };
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David Demelier <markand@malikania.fr>
parents:
diff changeset
225
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David Demelier <markand@malikania.fr>
parents:
diff changeset
226 khttp_head(req, kresps[KRESP_STATUS], "%s", khttps[KHTTP_200]);
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David Demelier <markand@malikania.fr>
parents:
diff changeset
227 khttp_body(req);
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David Demelier <markand@malikania.fr>
parents:
diff changeset
228 header(req);
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David Demelier <markand@malikania.fr>
parents:
diff changeset
229 khttp_template(req, &kt, template("index.html"));
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David Demelier <markand@malikania.fr>
parents:
diff changeset
230 footer(req);
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David Demelier <markand@malikania.fr>
parents:
diff changeset
231 }
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David Demelier <markand@malikania.fr>
parents:
diff changeset
232
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David Demelier <markand@malikania.fr>
parents:
diff changeset
233 khttp_free(req);
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David Demelier <markand@malikania.fr>
parents:
diff changeset
234 }
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David Demelier <markand@malikania.fr>
parents:
diff changeset
235
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David Demelier <markand@malikania.fr>
parents:
diff changeset
236 static void
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David Demelier <markand@malikania.fr>
parents:
diff changeset
237 page_new(struct kreq *req)
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David Demelier <markand@malikania.fr>
parents:
diff changeset
238 {
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David Demelier <markand@malikania.fr>
parents:
diff changeset
239 (void)req;
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David Demelier <markand@malikania.fr>
parents:
diff changeset
240 }
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David Demelier <markand@malikania.fr>
parents:
diff changeset
241
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David Demelier <markand@malikania.fr>
parents:
diff changeset
242 static void
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David Demelier <markand@malikania.fr>
parents:
diff changeset
243 page_fork(struct kreq *req)
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David Demelier <markand@malikania.fr>
parents:
diff changeset
244 {
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David Demelier <markand@malikania.fr>
parents:
diff changeset
245 (void)req;
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David Demelier <markand@malikania.fr>
parents:
diff changeset
246 }
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David Demelier <markand@malikania.fr>
parents:
diff changeset
247
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David Demelier <markand@malikania.fr>
parents:
diff changeset
248 static void
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David Demelier <markand@malikania.fr>
parents:
diff changeset
249 page_paste(struct kreq *req)
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David Demelier <markand@malikania.fr>
parents:
diff changeset
250 {
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David Demelier <markand@malikania.fr>
parents:
diff changeset
251 struct tmpl_paste data = {
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parents:
diff changeset
252 .req = req
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David Demelier <markand@malikania.fr>
parents:
diff changeset
253 };
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David Demelier <markand@malikania.fr>
parents:
diff changeset
254
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David Demelier <markand@malikania.fr>
parents:
diff changeset
255 khttp_head(req, kresps[KRESP_CONTENT_TYPE], "%s", kmimetypes[KMIME_TEXT_HTML]);
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David Demelier <markand@malikania.fr>
parents:
diff changeset
256
836a698946f8 pasterd: add basic routes
David Demelier <markand@malikania.fr>
parents:
diff changeset
257 if (!database_get(&data.paste, req->path)) {
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David Demelier <markand@malikania.fr>
parents:
diff changeset
258 khttp_head(req, kresps[KRESP_STATUS], "%s", khttps[KHTTP_404]);
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David Demelier <markand@malikania.fr>
parents:
diff changeset
259 khttp_body(req);
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David Demelier <markand@malikania.fr>
parents:
diff changeset
260 khttp_template(req, NULL, template("404.html"));
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David Demelier <markand@malikania.fr>
parents:
diff changeset
261 } else {
836a698946f8 pasterd: add basic routes
David Demelier <markand@malikania.fr>
parents:
diff changeset
262 const char *keywords[] = {
836a698946f8 pasterd: add basic routes
David Demelier <markand@malikania.fr>
parents:
diff changeset
263 "uuid",
836a698946f8 pasterd: add basic routes
David Demelier <markand@malikania.fr>
parents:
diff changeset
264 "title",
836a698946f8 pasterd: add basic routes
David Demelier <markand@malikania.fr>
parents:
diff changeset
265 "author",
836a698946f8 pasterd: add basic routes
David Demelier <markand@malikania.fr>
parents:
diff changeset
266 "language",
836a698946f8 pasterd: add basic routes
David Demelier <markand@malikania.fr>
parents:
diff changeset
267 "code",
836a698946f8 pasterd: add basic routes
David Demelier <markand@malikania.fr>
parents:
diff changeset
268 "timestamp",
836a698946f8 pasterd: add basic routes
David Demelier <markand@malikania.fr>
parents:
diff changeset
269 "visible",
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David Demelier <markand@malikania.fr>
parents:
diff changeset
270 "duration"
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David Demelier <markand@malikania.fr>
parents:
diff changeset
271 };
836a698946f8 pasterd: add basic routes
David Demelier <markand@malikania.fr>
parents:
diff changeset
272 const struct ktemplate kt = {
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David Demelier <markand@malikania.fr>
parents:
diff changeset
273 .key = keywords,
836a698946f8 pasterd: add basic routes
David Demelier <markand@malikania.fr>
parents:
diff changeset
274 .keysz = 8,
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David Demelier <markand@malikania.fr>
parents:
diff changeset
275 .cb = tmpl_paste,
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David Demelier <markand@malikania.fr>
parents:
diff changeset
276 .arg = &data
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David Demelier <markand@malikania.fr>
parents:
diff changeset
277 };
836a698946f8 pasterd: add basic routes
David Demelier <markand@malikania.fr>
parents:
diff changeset
278
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David Demelier <markand@malikania.fr>
parents:
diff changeset
279 khttp_head(req, kresps[KRESP_STATUS], "%s", khttps[KHTTP_200]);
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David Demelier <markand@malikania.fr>
parents:
diff changeset
280 khttp_body(req);
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David Demelier <markand@malikania.fr>
parents:
diff changeset
281 header(req);
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David Demelier <markand@malikania.fr>
parents:
diff changeset
282 khttp_template(req, &kt, template("paste.html"));
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David Demelier <markand@malikania.fr>
parents:
diff changeset
283 footer(req);
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David Demelier <markand@malikania.fr>
parents:
diff changeset
284 khttp_free(req);
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David Demelier <markand@malikania.fr>
parents:
diff changeset
285 }
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David Demelier <markand@malikania.fr>
parents:
diff changeset
286 }
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David Demelier <markand@malikania.fr>
parents:
diff changeset
287
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David Demelier <markand@malikania.fr>
parents:
diff changeset
288 static void
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David Demelier <markand@malikania.fr>
parents:
diff changeset
289 page_about(struct kreq *req)
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David Demelier <markand@malikania.fr>
parents:
diff changeset
290 {
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David Demelier <markand@malikania.fr>
parents:
diff changeset
291 (void)req;
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David Demelier <markand@malikania.fr>
parents:
diff changeset
292 }
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David Demelier <markand@malikania.fr>
parents:
diff changeset
293
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David Demelier <markand@malikania.fr>
parents:
diff changeset
294 static void
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David Demelier <markand@malikania.fr>
parents:
diff changeset
295 page_download(struct kreq *req)
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David Demelier <markand@malikania.fr>
parents:
diff changeset
296 {
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David Demelier <markand@malikania.fr>
parents:
diff changeset
297 (void)req;
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David Demelier <markand@malikania.fr>
parents:
diff changeset
298 }
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David Demelier <markand@malikania.fr>
parents:
diff changeset
299
836a698946f8 pasterd: add basic routes
David Demelier <markand@malikania.fr>
parents:
diff changeset
300 static void
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David Demelier <markand@malikania.fr>
parents:
diff changeset
301 process(struct kreq *req)
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David Demelier <markand@malikania.fr>
parents:
diff changeset
302 {
836a698946f8 pasterd: add basic routes
David Demelier <markand@malikania.fr>
parents:
diff changeset
303 assert(req);
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David Demelier <markand@malikania.fr>
parents:
diff changeset
304
836a698946f8 pasterd: add basic routes
David Demelier <markand@malikania.fr>
parents:
diff changeset
305 handlers[req->page](req);
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David Demelier <markand@malikania.fr>
parents:
diff changeset
306 }
836a698946f8 pasterd: add basic routes
David Demelier <markand@malikania.fr>
parents:
diff changeset
307
836a698946f8 pasterd: add basic routes
David Demelier <markand@malikania.fr>
parents:
diff changeset
308 void
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David Demelier <markand@malikania.fr>
parents:
diff changeset
309 http_fcgi_run(void)
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David Demelier <markand@malikania.fr>
parents:
diff changeset
310 {
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David Demelier <markand@malikania.fr>
parents:
diff changeset
311 struct kreq req;
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David Demelier <markand@malikania.fr>
parents:
diff changeset
312 struct kfcgi *fcgi;
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David Demelier <markand@malikania.fr>
parents:
diff changeset
313
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David Demelier <markand@malikania.fr>
parents:
diff changeset
314 if (khttp_fcgi_init(&fcgi, NULL, 0, pages, PAGE_LAST, 0) != KCGI_OK)
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David Demelier <markand@malikania.fr>
parents:
diff changeset
315 return;
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David Demelier <markand@malikania.fr>
parents:
diff changeset
316
836a698946f8 pasterd: add basic routes
David Demelier <markand@malikania.fr>
parents:
diff changeset
317 while (khttp_fcgi_parse(fcgi, &req) == KCGI_OK)
836a698946f8 pasterd: add basic routes
David Demelier <markand@malikania.fr>
parents:
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318 process(&req);
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parents:
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319
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David Demelier <markand@malikania.fr>
parents:
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320 khttp_fcgi_free(fcgi);
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parents:
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321 }
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parents:
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322
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David Demelier <markand@malikania.fr>
parents:
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323 void
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David Demelier <markand@malikania.fr>
parents:
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324 http_cgi_run(void)
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parents:
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325 {
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parents:
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326 struct kreq req;
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parents:
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327
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parents:
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328 if (khttp_parse(&req, NULL, 0, pages, PAGE_LAST, 0) == KCGI_OK)
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parents:
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329 process(&req);
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parents:
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330 }