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annotate page-paste.c @ 84:94dcca86e5cc

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pasterd: database reentrancy + timer
author David Demelier <markand@malikania.fr>
date Fri, 17 Mar 2023 20:01:00 +0100
parents 0a29424e4486
children
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1 /*
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2 * page-paste.c -- page /paste/<id>
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3 *
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4 * Copyright (c) 2020-2023 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 <assert.h>
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20
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21 #include "database.h"
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22 #include "page-paste.h"
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23 #include "page-status.h"
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24 #include "page.h"
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25 #include "paste.h"
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26 #include "util.h"
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27
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28 #define TITLE "paster -- paste details"
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29 #define HTML "paste.html"
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30
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31 enum {
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32 KEYWORD_TITLE,
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33 KEYWORD_ID,
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34 KEYWORD_AUTHOR,
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35 KEYWORD_LANGUAGE,
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36 KEYWORD_DATE,
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37 KEYWORD_PUBLIC,
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38 KEYWORD_EXPIRES,
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39 KEYWORD_CODE
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40 };
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41
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42 struct page {
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43 struct kreq *req;
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44 struct ktemplate template;
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45 struct paste paste;
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46 };
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47
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48 static const char * const keywords[] = {
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49 [KEYWORD_TITLE] = "title",
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50 [KEYWORD_ID] = "id",
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51 [KEYWORD_AUTHOR] = "author",
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52 [KEYWORD_LANGUAGE] = "language",
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53 [KEYWORD_DATE] = "date",
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54 [KEYWORD_PUBLIC] = "public",
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55 [KEYWORD_EXPIRES] = "expires",
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56 [KEYWORD_CODE] = "code"
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57 };
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58
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59 static int
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60 format(size_t keyword, void *data)
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61 {
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62 struct page *page = data;
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63 struct khtmlreq html;
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64
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65 khtml_open(&html, page->req, 0);
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66
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67 switch (keyword) {
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68 case KEYWORD_TITLE:
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69 khtml_puts(&html, page->paste.title);
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70 break;
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71 case KEYWORD_ID:
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72 khtml_puts(&html, page->paste.id);
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73 break;
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74 case KEYWORD_AUTHOR:
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75 khtml_puts(&html, page->paste.author);
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76 break;
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77 case KEYWORD_LANGUAGE:
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78 khtml_puts(&html, page->paste.language);
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79 break;
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80 case KEYWORD_DATE:
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81 khtml_puts(&html, bstrftime("%F %T", localtime(&page->paste.timestamp)));
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82 break;
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83 case KEYWORD_PUBLIC:
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84 khtml_puts(&html, page->paste.visible ? "Yes" : "No");
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85 break;
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86 case KEYWORD_EXPIRES:
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87 khtml_puts(&html, ttl(page->paste.timestamp, page->paste.duration));
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88 break;
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89 case KEYWORD_CODE:
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90 khtml_puts(&html, page->paste.code);
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91 break;
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92 default:
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93 break;
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94 }
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95
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96 khtml_close(&html);
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97
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98 return 1;
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99 }
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100
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101 static void
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102 get(struct kreq *req)
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103 {
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104 struct page self = {
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105 .req = req,
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106 .template = {
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107 .cb = format,
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108 .arg = &self,
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109 .key = keywords,
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110 .keysz = NELEM(keywords)
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111 }
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112 };
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113
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114 if (database_get(&database, &self.paste, req->path) < 0)
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115 page_status(req, KHTTP_404);
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116 else {
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117 page(req, KHTTP_200, TITLE, HTML, &self.template);
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118 paste_finish(&self.paste);
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119 }
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120 }
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121
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122 void
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123 page_paste(struct kreq *req)
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124 {
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125 assert(req);
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126
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127 switch (req->method) {
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128 case KMETHOD_GET:
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129 get(req);
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130 break;
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131 default:
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132 page_status(req, KHTTP_400);
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133 break;
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134 }
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135 }