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30 (version=SSLv3 cipher=OTHER); Thu, 08 Dec 2011 14:48:39 -0800 (PST)
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31 From: Jani Nikula <jani@nikula.org>
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32 To: notmuch@notmuchmail.org
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33 Subject: [PATCH v4 1/3] cli: introduce the concept of user defined hooks
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34 Date: Fri, 9 Dec 2011 00:48:29 +0200
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36 <1e4ddb5e3a6b980e47418f67e16709a42e63bc47.1323384304.git.jani@nikula.org>
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61 Add mechanism for running user defined hooks. Hooks are executables or
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62 symlinks to executables stored under the new notmuch hooks directory,
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63 <database-path>/.notmuch/hooks.
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65 No hooks are introduced here, but adding support for a hook is now a simple
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66 matter of calling the new notmuch_run_hook() function at an appropriate
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67 location with the hook name.
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69 Signed-off-by: Jani Nikula <jani@nikula.org>
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71 Makefile.local | 1 +
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72 hooks.c | 93 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
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73 notmuch-client.h | 3 ++
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74 3 files changed, 97 insertions(+), 0 deletions(-)
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75 create mode 100644 hooks.c
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77 diff --git a/Makefile.local b/Makefile.local
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78 index 15e6d88..88365da 100644
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79 --- a/Makefile.local
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80 +++ b/Makefile.local
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81 @@ -298,6 +298,7 @@ notmuch_client_srcs = \
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83 gmime-filter-reply.c \
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84 gmime-filter-headers.c \
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89 diff --git a/hooks.c b/hooks.c
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90 new file mode 100644
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91 index 0000000..44ee419
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95 +/* notmuch - Not much of an email program, (just index and search)
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97 + * This file is part of notmuch.
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99 + * Copyright © 2011 Jani Nikula
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101 + * This program is free software: you can redistribute it and/or modify
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102 + * it under the terms of the GNU General Public License as published by
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103 + * the Free Software Foundation, either version 3 of the License, or
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104 + * (at your option) any later version.
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106 + * This program is distributed in the hope that it will be useful,
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107 + * but WITHOUT ANY WARRANTY; without even the implied warranty of
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108 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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109 + * GNU General Public License for more details.
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111 + * You should have received a copy of the GNU General Public License
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112 + * along with this program. If not, see http://www.gnu.org/licenses/ .
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114 + * Author: Jani Nikula <jani@nikula.org>
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117 +#include "notmuch-client.h"
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118 +#include <sys/wait.h>
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121 +notmuch_run_hook (const char *db_path, const char *hook)
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127 + hook_path = talloc_asprintf (NULL, "%s/%s/%s/%s", db_path, ".notmuch",
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129 + if (hook_path == NULL) {
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130 + fprintf (stderr, "Out of memory\n");
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134 + /* Check access before fork() for speed and simplicity of error handling. */
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135 + if (access (hook_path, X_OK) == -1) {
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136 + /* Ignore ENOENT. It's okay not to have a hook, hook dir, or even
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137 + * notmuch dir. Dangling symbolic links also result in ENOENT, but
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138 + * we'll ignore that too for simplicity. */
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139 + if (errno != ENOENT) {
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140 + fprintf (stderr, "Error: %s hook access failed: %s\n", hook,
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141 + strerror (errno));
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149 + fprintf (stderr, "Error: %s hook fork failed: %s\n", hook,
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150 + strerror (errno));
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153 + } else if (pid == 0) {
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154 + execl (hook_path, hook_path, NULL);
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155 + /* Same as above for ENOENT, but unlikely now. Indicate all other errors
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156 + * to parent through non-zero exit status. */
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157 + if (errno != ENOENT) {
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158 + fprintf (stderr, "Error: %s hook execution failed: %s\n", hook,
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159 + strerror (errno));
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165 + if (waitpid (pid, &status, 0) == -1) {
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166 + fprintf (stderr, "Error: %s hook wait failed: %s\n", hook,
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167 + strerror (errno));
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172 + if (!WIFEXITED (status) || WEXITSTATUS (status)) {
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173 + if (WIFEXITED (status)) {
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174 + fprintf (stderr, "Error: %s hook failed with status %d\n",
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175 + hook, WEXITSTATUS (status));
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176 + } else if (WIFSIGNALED (status)) {
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177 + fprintf (stderr, "Error: %s hook terminated with signal %d\n",
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178 + hook, WTERMSIG (status));
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184 + talloc_free (hook_path);
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188 diff --git a/notmuch-client.h b/notmuch-client.h
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189 index b50cb38..a91ad6c 100644
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190 --- a/notmuch-client.h
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191 +++ b/notmuch-client.h
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192 @@ -235,6 +235,9 @@ void
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193 notmuch_config_set_maildir_synchronize_flags (notmuch_config_t *config,
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194 notmuch_bool_t synchronize_flags);
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197 +notmuch_run_hook (const char *db_path, const char *hook);
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200 debugger_is_active (void);
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