[PATCH v2 04/16] Provide _notmuch_crypto_{set,get}_gpg_path

diff --git a/3e/dc5e2a96bc8b3850694fd096f35219896f40aa b/3e/dc5e2a96bc8b3850694fd096f35219896f40aa
new file mode 100644 (file)
index 0000000..f99143b
--- /dev/null
+++ b/3e/dc5e2a96bc8b3850694fd096f35219896f40aa
@@ -0,0 +1,237 @@
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+From: Daniel Kahn Gillmor <dkg@fifthhorseman.net>\r
+To: Notmuch Mail <notmuch@notmuchmail.org>\r
+Subject: [PATCH v2 04/16] Provide _notmuch_crypto_{set,get}_gpg_path\r
+Date: Tue, 19 Jan 2016 21:52:37 -0500\r
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+\r
+Use functions to access the gpg_path for a _notmuch_crypto_t object.\r
+This lets us return sensible defaults based on the state of the user's\r
+machine.\r
+---\r
+ notmuch-reply.c | 13 ++++++++++---\r
+ notmuch-show.c  | 12 ++++++++++--\r
+ util/crypto.c   | 49 ++++++++++++++++++++++++++++++++++++++++++++++++-\r
+ util/crypto.h   |  8 +++++++-\r
+ 4 files changed, 75 insertions(+), 7 deletions(-)\r
+\r
+diff --git a/notmuch-reply.c b/notmuch-reply.c\r
+index eccfb32..793e6f9 100644\r
+--- a/notmuch-reply.c\r
++++ b/notmuch-reply.c\r
+@@ -790,13 +790,15 @@ notmuch_reply_command (notmuch_config_t *config, int argc, char *argv[])\r
+       .crypto = {\r
+           .verify = FALSE,\r
+           .decrypt = FALSE,\r
+-          .gpgpath = NULL\r
++          .gpg_path = NULL\r
+       }\r
+     };\r
+     int format = FORMAT_DEFAULT;\r
+     int reply_all = TRUE;\r
+     struct sprinter *sp = NULL;\r
+-\r
++    notmuch_status_t status;\r
++    const char *gpg_path = NULL;\r
++    \r
+     notmuch_opt_desc_t options[] = {\r
+       { NOTMUCH_OPT_KEYWORD, &format, "format", 'f',\r
+         (notmuch_keyword_t []){ { "default", FORMAT_DEFAULT },\r
+@@ -845,7 +847,12 @@ notmuch_reply_command (notmuch_config_t *config, int argc, char *argv[])\r
+       return EXIT_FAILURE;\r
+     }\r
+ \r
+-    params.crypto.gpgpath = notmuch_config_get_crypto_gpg_path (config);\r
++    gpg_path = notmuch_config_get_crypto_gpg_path (config);\r
++    status = _notmuch_crypto_set_gpg_path (&(params.crypto), gpg_path);\r
++    if (status != NOTMUCH_STATUS_SUCCESS) {\r
++      fprintf (stderr, "Error: could not set gpg_path to '%s'.\n", gpg_path);\r
++      return EXIT_FAILURE;\r
++    }\r
+ \r
+     if (notmuch_database_open (notmuch_config_get_database_path (config),\r
+                              NOTMUCH_DATABASE_MODE_READ_ONLY, &notmuch))\r
+diff --git a/notmuch-show.c b/notmuch-show.c\r
+index 3c91ece..096fd49 100644\r
+--- a/notmuch-show.c\r
++++ b/notmuch-show.c\r
+@@ -1006,13 +1006,15 @@ notmuch_show_command (notmuch_config_t *config, int argc, char *argv[])\r
+       .crypto = {\r
+           .verify = FALSE,\r
+           .decrypt = FALSE,\r
+-          .gpgpath = NULL\r
++          .gpg_path = NULL\r
+       },\r
+       .include_html = FALSE\r
+     };\r
+     int format_sel = NOTMUCH_FORMAT_NOT_SPECIFIED;\r
+     int exclude = EXCLUDE_TRUE;\r
+     int entire_thread = ENTIRE_THREAD_DEFAULT;\r
++    notmuch_status_t status;\r
++    const char *gpg_path = NULL;\r
+ \r
+     notmuch_opt_desc_t options[] = {\r
+       { NOTMUCH_OPT_KEYWORD, &format_sel, "format", 'f',\r
+@@ -1130,7 +1132,13 @@ notmuch_show_command (notmuch_config_t *config, int argc, char *argv[])\r
+       return EXIT_FAILURE;\r
+     }\r
+ \r
+-    params.crypto.gpgpath = notmuch_config_get_crypto_gpg_path (config);\r
++\r
++    gpg_path = notmuch_config_get_crypto_gpg_path (config);\r
++    status = _notmuch_crypto_set_gpg_path (&(params.crypto), gpg_path);\r
++    if (status != NOTMUCH_STATUS_SUCCESS) {\r
++      fprintf (stderr, "Error: could not set gpg_path to '%s'.\n", gpg_path);\r
++      return EXIT_FAILURE;\r
++    }\r
+ \r
+     if (notmuch_database_open (notmuch_config_get_database_path (config),\r
+                              NOTMUCH_DATABASE_MODE_READ_ONLY, &notmuch))\r
+diff --git a/util/crypto.c b/util/crypto.c\r
+index c18c82c..0b51347 100644\r
+--- a/util/crypto.c\r
++++ b/util/crypto.c\r
+@@ -21,7 +21,11 @@\r
+ \r
+ #include "notmuch.h"\r
+ #include "crypto.h"\r
++#include "search-path.h"\r
+ #include <string.h>\r
++#include <talloc.h>\r
++\r
++#define ARRAY_SIZE(arr) (sizeof (arr) / sizeof (arr[0]))\r
+ \r
+ #define ARRAY_SIZE(arr) (sizeof (arr) / sizeof (arr[0]))\r
+ \r
+@@ -38,7 +42,7 @@ get_gpg_context (_notmuch_crypto_t *crypto, GMimeCryptoContext **ctx)\r
+     }\r
+ \r
+     /* TODO: GMimePasswordRequestFunc */\r
+-    crypto->gpgctx = g_mime_gpg_context_new (NULL, crypto->gpgpath ? crypto->gpgpath : "gpg");\r
++    crypto->gpgctx = g_mime_gpg_context_new (NULL, _notmuch_crypto_get_gpg_path(crypto));\r
+     if (! crypto->gpgctx) {\r
+       return NOTMUCH_STATUS_FAILED_CRYPTO_CONTEXT_CREATION;\r
+     }\r
+@@ -88,6 +92,47 @@ _notmuch_crypto_get_gmime_ctx_for_protocol (_notmuch_crypto_t *crypto,\r
+     return NOTMUCH_STATUS_UNKNOWN_CRYPTO_PROTOCOL;\r
+ }\r
+ \r
++const char*\r
++_notmuch_crypto_get_gpg_path (const _notmuch_crypto_t *crypto)\r
++{\r
++    if (crypto->gpg_path)\r
++      return crypto->gpg_path;\r
++\r
++#define try_gpg_path(z) if (test_for_executable(z)) return z\r
++    try_gpg_path("gpg2");\r
++    try_gpg_path("gpg");\r
++#undef try_gpg_path\r
++    return NULL;\r
++}\r
++\r
++notmuch_status_t\r
++_notmuch_crypto_set_gpg_path (_notmuch_crypto_t *crypto, const char* gpg_path)\r
++{\r
++    /* return success if this matches what is already configured */\r
++    if ((!gpg_path && !crypto->gpg_path) ||\r
++      (gpg_path && crypto->gpg_path && 0 == strcmp(gpg_path, crypto->gpg_path)))\r
++      return NOTMUCH_STATUS_SUCCESS;\r
++\r
++    if (!gpg_path && !test_for_executable(gpg_path))\r
++      return NOTMUCH_STATUS_FILE_ERROR;\r
++\r
++    /* clear any existing gpgctx, since things are changing */\r
++    if (crypto->gpgctx) {\r
++      g_object_unref (crypto->gpgctx);\r
++      crypto->gpgctx = NULL;\r
++    }\r
++\r
++    if (crypto->gpg_path) {\r
++      talloc_free(crypto->gpg_path);\r
++      crypto->gpg_path = NULL;\r
++    }\r
++\r
++    if (gpg_path)\r
++      crypto->gpg_path = talloc_strdup (NULL, gpg_path);\r
++\r
++    return NOTMUCH_STATUS_SUCCESS;\r
++}\r
++\r
+ void\r
+ _notmuch_crypto_cleanup (_notmuch_crypto_t *crypto)\r
+ {\r
+@@ -95,4 +140,6 @@ _notmuch_crypto_cleanup (_notmuch_crypto_t *crypto)\r
+       g_object_unref (crypto->gpgctx);\r
+       crypto->gpgctx = NULL;\r
+     }\r
++    talloc_free (crypto->gpg_path);\r
++    crypto->gpg_path = NULL;\r
+ }\r
+diff --git a/util/crypto.h b/util/crypto.h\r
+index 92357b4..e666774 100644\r
+--- a/util/crypto.h\r
++++ b/util/crypto.h\r
+@@ -8,7 +8,7 @@ typedef struct _notmuch_crypto {\r
+     GMimeCryptoContext* gpgctx;\r
+     notmuch_bool_t verify;\r
+     notmuch_bool_t decrypt;\r
+-    const char *gpgpath;\r
++    char *gpg_path;\r
+ } _notmuch_crypto_t;\r
+ \r
+ \r
+@@ -17,6 +17,12 @@ _notmuch_crypto_get_gmime_ctx_for_protocol (_notmuch_crypto_t *crypto,\r
+                                           const char *protocol,\r
+                                           GMimeCryptoContext **ctx);\r
+ \r
++notmuch_status_t\r
++_notmuch_crypto_set_gpg_path (_notmuch_crypto_t *crypto, const char *gpg_path);\r
++\r
++const char *\r
++_notmuch_crypto_get_gpg_path (const _notmuch_crypto_t *crypto);\r
++\r
+ void\r
+ _notmuch_crypto_cleanup (_notmuch_crypto_t *crypto);\r
+ \r
+-- \r
+2.7.0.rc3\r
+\r