1 | /* |
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2 | * getdate.c : entry point for get_dated_revision for ra_serf |
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3 | * |
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4 | * ==================================================================== |
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5 | * Copyright (c) 2006-2007 CollabNet. All rights reserved. |
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6 | * |
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7 | * This software is licensed as described in the file COPYING, which |
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8 | * you should have received as part of this distribution. The terms |
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9 | * are also available at http://subversion.tigris.org/license-1.html. |
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10 | * If newer versions of this license are posted there, you may use a |
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11 | * newer version instead, at your option. |
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12 | * |
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13 | * This software consists of voluntary contributions made by many |
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14 | * individuals. For exact contribution history, see the revision |
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15 | * history and logs, available at http://subversion.tigris.org/. |
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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 | |
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21 | #include <apr_uri.h> |
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22 | |
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23 | #include <expat.h> |
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24 | |
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25 | #include <serf.h> |
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26 | |
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27 | #include "svn_pools.h" |
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28 | #include "svn_ra.h" |
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29 | #include "svn_dav.h" |
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30 | #include "svn_xml.h" |
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31 | #include "../libsvn_ra/ra_loader.h" |
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32 | #include "svn_config.h" |
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33 | #include "svn_delta.h" |
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34 | #include "svn_version.h" |
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35 | #include "svn_path.h" |
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36 | #include "svn_time.h" |
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37 | |
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38 | #include "private/svn_dav_protocol.h" |
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39 | #include "svn_private_config.h" |
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40 | |
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41 | #include "ra_serf.h" |
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42 | |
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43 | |
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44 | /* |
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45 | * This enum represents the current state of our XML parsing for a REPORT. |
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46 | */ |
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47 | typedef enum { |
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48 | NONE = 0, |
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49 | VERSION_NAME, |
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50 | } date_state_e; |
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51 | |
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52 | typedef struct { |
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53 | /* The currently collected value as we build it up */ |
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54 | const char *tmp; |
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55 | apr_size_t tmp_len; |
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56 | } date_info_t; |
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57 | |
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58 | typedef struct { |
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59 | apr_pool_t *pool; |
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60 | |
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61 | /* The time asked about. */ |
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62 | apr_time_t time; |
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63 | |
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64 | /* What was the youngest revision at that time? */ |
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65 | svn_revnum_t *revision; |
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66 | |
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67 | /* are we done? */ |
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68 | svn_boolean_t done; |
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69 | |
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70 | } date_context_t; |
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71 | |
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72 | |
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73 | static date_info_t * |
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74 | push_state(svn_ra_serf__xml_parser_t *parser, |
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75 | date_context_t *date_ctx, |
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76 | date_state_e state) |
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77 | { |
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78 | svn_ra_serf__xml_push_state(parser, state); |
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79 | |
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80 | if (state == VERSION_NAME) |
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81 | { |
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82 | date_info_t *info; |
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83 | |
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84 | info = apr_pcalloc(parser->state->pool, sizeof(*info)); |
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85 | |
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86 | parser->state->private = info; |
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87 | } |
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88 | |
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89 | return parser->state->private; |
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90 | } |
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91 | |
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92 | static svn_error_t * |
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93 | start_getdate(svn_ra_serf__xml_parser_t *parser, |
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94 | void *userData, |
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95 | svn_ra_serf__dav_props_t name, |
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96 | const char **attrs) |
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97 | { |
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98 | date_context_t *date_ctx = userData; |
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99 | date_state_e state; |
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100 | |
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101 | state = parser->state->current_state; |
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102 | |
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103 | if (state == NONE && |
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104 | strcmp(name.name, SVN_DAV__VERSION_NAME) == 0) |
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105 | { |
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106 | push_state(parser, date_ctx, VERSION_NAME); |
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107 | } |
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108 | |
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109 | return SVN_NO_ERROR; |
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110 | } |
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111 | |
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112 | static svn_error_t * |
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113 | end_getdate(svn_ra_serf__xml_parser_t *parser, |
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114 | void *userData, |
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115 | svn_ra_serf__dav_props_t name) |
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116 | { |
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117 | date_context_t *date_ctx = userData; |
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118 | date_state_e state; |
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119 | date_info_t *info; |
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120 | |
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121 | state = parser->state->current_state; |
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122 | info = parser->state->private; |
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123 | |
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124 | if (state == VERSION_NAME && |
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125 | strcmp(name.name, SVN_DAV__VERSION_NAME) == 0) |
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126 | { |
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127 | *date_ctx->revision = SVN_STR_TO_REV(info->tmp); |
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128 | svn_ra_serf__xml_pop_state(parser); |
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129 | } |
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130 | |
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131 | return SVN_NO_ERROR; |
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132 | } |
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133 | |
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134 | static svn_error_t * |
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135 | cdata_getdate(svn_ra_serf__xml_parser_t *parser, |
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136 | void *userData, |
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137 | const char *data, |
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138 | apr_size_t len) |
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139 | { |
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140 | date_context_t *date_ctx = userData; |
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141 | date_state_e state; |
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142 | date_info_t *info; |
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143 | |
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144 | UNUSED_CTX(date_ctx); |
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145 | |
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146 | state = parser->state->current_state; |
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147 | info = parser->state->private; |
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148 | |
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149 | switch (state) |
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150 | { |
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151 | case VERSION_NAME: |
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152 | svn_ra_serf__expand_string(&info->tmp, &info->tmp_len, |
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153 | data, len, parser->state->pool); |
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154 | break; |
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155 | default: |
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156 | break; |
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157 | } |
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158 | |
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159 | return SVN_NO_ERROR; |
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160 | } |
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161 | |
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162 | static serf_bucket_t* |
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163 | create_getdate_body(void *baton, |
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164 | serf_bucket_alloc_t *alloc, |
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165 | apr_pool_t *pool) |
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166 | { |
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167 | serf_bucket_t *buckets; |
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168 | date_context_t *date_ctx = baton; |
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169 | |
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170 | buckets = serf_bucket_aggregate_create(alloc); |
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171 | |
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172 | svn_ra_serf__add_open_tag_buckets(buckets, alloc, "S:dated-rev-report", |
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173 | "xmlns:S", SVN_XML_NAMESPACE, |
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174 | "xmlns:D", "DAV:", |
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175 | NULL); |
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176 | |
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177 | svn_ra_serf__add_tag_buckets(buckets, |
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178 | "D:" SVN_DAV__CREATIONDATE, |
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179 | svn_time_to_cstring(date_ctx->time, pool), |
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180 | alloc); |
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181 | |
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182 | svn_ra_serf__add_close_tag_buckets(buckets, alloc, "S:dated-rev-report"); |
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183 | |
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184 | return buckets; |
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185 | } |
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186 | |
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187 | svn_error_t * |
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188 | svn_ra_serf__get_dated_revision(svn_ra_session_t *ra_session, |
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189 | svn_revnum_t *revision, |
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190 | apr_time_t tm, |
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191 | apr_pool_t *pool) |
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192 | { |
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193 | date_context_t *date_ctx; |
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194 | svn_ra_serf__session_t *session = ra_session->priv; |
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195 | svn_ra_serf__handler_t *handler; |
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196 | svn_ra_serf__xml_parser_t *parser_ctx; |
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197 | const char *vcc_url; |
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198 | int status_code; |
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199 | |
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200 | date_ctx = apr_pcalloc(pool, sizeof(*date_ctx)); |
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201 | date_ctx->pool = pool; |
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202 | date_ctx->time = tm; |
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203 | date_ctx->revision = revision; |
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204 | date_ctx->done = FALSE; |
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205 | |
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206 | SVN_ERR(svn_ra_serf__discover_root(&vcc_url, NULL, |
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207 | session, session->conns[0], |
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208 | session->repos_url.path, pool)); |
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209 | |
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210 | handler = apr_pcalloc(pool, sizeof(*handler)); |
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211 | |
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212 | handler->method = "REPORT"; |
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213 | handler->path = vcc_url; |
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214 | handler->body_type = "text/xml"; |
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215 | handler->conn = session->conns[0]; |
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216 | handler->session = session; |
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217 | |
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218 | parser_ctx = apr_pcalloc(pool, sizeof(*parser_ctx)); |
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219 | |
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220 | parser_ctx->pool = pool; |
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221 | parser_ctx->user_data = date_ctx; |
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222 | parser_ctx->start = start_getdate; |
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223 | parser_ctx->end = end_getdate; |
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224 | parser_ctx->cdata = cdata_getdate; |
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225 | parser_ctx->done = &date_ctx->done; |
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226 | parser_ctx->status_code = &status_code; |
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227 | |
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228 | handler->body_delegate = create_getdate_body; |
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229 | handler->body_delegate_baton = date_ctx; |
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230 | |
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231 | handler->response_handler = svn_ra_serf__handle_xml_parser; |
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232 | handler->response_baton = parser_ctx; |
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233 | |
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234 | svn_ra_serf__request_create(handler); |
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235 | |
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236 | *date_ctx->revision = SVN_INVALID_REVNUM; |
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237 | |
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238 | return svn_ra_serf__context_run_wait(&date_ctx->done, session, pool); |
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239 | } |
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