diff options
Diffstat (limited to 'src/plugins/abrt-action-analyze-backtrace.c')
| -rw-r--r-- | src/plugins/abrt-action-analyze-backtrace.c | 190 |
1 files changed, 190 insertions, 0 deletions
diff --git a/src/plugins/abrt-action-analyze-backtrace.c b/src/plugins/abrt-action-analyze-backtrace.c new file mode 100644 index 00000000..e65b1781 --- /dev/null +++ b/src/plugins/abrt-action-analyze-backtrace.c @@ -0,0 +1,190 @@ +/* + Copyright (C) 2010, 2011 Red Hat, Inc. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License along + with this program; if not, write to the Free Software Foundation, Inc., + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. +*/ +#include "abrtlib.h" +#include "../btparser/backtrace.h" +#include "../btparser/frame.h" +#include "../btparser/location.h" +#include "parse_options.h" + +#define PROGNAME "abrt-action-generate-backtrace" + +static const char *dump_dir_name = "."; + + +static void create_hash(char hash_str[SHA1_RESULT_LEN*2 + 1], const char *pInput) +{ + unsigned len; + unsigned char hash2[SHA1_RESULT_LEN]; + sha1_ctx_t sha1ctx; + + sha1_begin(&sha1ctx); + sha1_hash(pInput, strlen(pInput), &sha1ctx); + sha1_end(hash2, &sha1ctx); + len = SHA1_RESULT_LEN; + + char *d = hash_str; + unsigned char *s = hash2; + while (len) + { + *d++ = "0123456789abcdef"[*s >> 4]; + *d++ = "0123456789abcdef"[*s & 0xf]; + s++; + len--; + } + *d = '\0'; + //log("hash2:%s str:'%s'", hash_str, pInput); +} + +int main(int argc, char **argv) +{ + char *env_verbose = getenv("ABRT_VERBOSE"); + if (env_verbose) + g_verbose = atoi(env_verbose); + + /* Can't keep these strings/structs static: _() doesn't support that */ + const char *program_usage_string = _( + PROGNAME" [options] -d DIR\n" + "\n" + "Analyzes C/C++ backtrace, generates duplication hash, backtrace rating, and identifies crash function in dump directory DIR" + ); + enum { + OPT_v = 1 << 0, + OPT_d = 1 << 1 + }; + /* Keep enum above and order of options below in sync! */ + struct options program_options[] = { + OPT__VERBOSE(&g_verbose), + OPT_STRING('d', NULL, &dump_dir_name, "DIR", _("Dump directory")), + OPT_END() + }; + /*unsigned opts =*/ parse_opts(argc, argv, program_options, program_usage_string); + + putenv(xasprintf("ABRT_VERBOSE=%u", g_verbose)); + + char *pfx = getenv("ABRT_PROG_PREFIX"); + if (pfx && string_to_bool(pfx)) + msg_prefix = PROGNAME; + + struct dump_dir *dd = dd_opendir(dump_dir_name, /*flags:*/ 0); + if (!dd) + return 1; + + char *package = dd_load_text(dd, FILENAME_PACKAGE); + char *executable = dd_load_text(dd, FILENAME_EXECUTABLE); + + /* Read backtrace */ + /* NB: get_backtrace() closes dd */ + char *backtrace_str = dd_load_text(dd, FILENAME_BACKTRACE); + if (!backtrace_str) + { + backtrace_str = xstrdup(""); + log("Backtrace file is missing"); + } + + /* Compute backtrace hash */ + struct btp_location location; + btp_location_init(&location); + char *backtrace_str_ptr = backtrace_str; + struct btp_backtrace *backtrace = btp_backtrace_parse(&backtrace_str_ptr, &location); + free(backtrace_str); + + /* Store backtrace hash */ + if (!backtrace) + { + /* + * The parser failed. Compute the UUID from the executable + * and package only. This is not supposed to happen often. + */ + VERB1 log(_("Backtrace parsing failed for %s"), dump_dir_name); + VERB1 log("%d:%d: %s", location.line, location.column, location.message); + struct strbuf *emptybt = strbuf_new(); + strbuf_prepend_str(emptybt, executable); + strbuf_prepend_str(emptybt, package); + + char hash_str[SHA1_RESULT_LEN*2 + 1]; + create_hash(hash_str, emptybt->buf); + + dd_save_text(dd, FILENAME_DUPHASH, hash_str); + /* + * Other parts of ABRT assume that if no rating is available, + * it is ok to allow reporting of the bug. To be sure no bad + * backtrace is reported, rate the backtrace with the lowest + * rating. + */ + dd_save_text(dd, FILENAME_RATING, "0"); + + strbuf_free(emptybt); + free(package); + free(executable); + dd_close(dd); + + /* Report success even if the parser failed, as the backtrace + * has been created and rated. The failure is caused by a flaw + * in the parser, not in the backtrace. + */ + return 0; + } + + /* Compute duplication hash. */ + char *str_hash_core = btp_backtrace_get_duplication_hash(backtrace); + struct strbuf *str_hash = strbuf_new(); + strbuf_append_str(str_hash, package); + strbuf_append_str(str_hash, executable); + strbuf_append_str(str_hash, str_hash_core); + + char hash_str[SHA1_RESULT_LEN*2 + 1]; + create_hash(hash_str, str_hash->buf); + + dd_save_text(dd, FILENAME_DUPHASH, hash_str); + strbuf_free(str_hash); + free(str_hash_core); + + /* Compute the backtrace rating. */ + float quality = btp_backtrace_quality_complex(backtrace); + const char *rating; + if (quality < 0.6f) + rating = "0"; + else if (quality < 0.7f) + rating = "1"; + else if (quality < 0.8f) + rating = "2"; + else if (quality < 0.9f) + rating = "3"; + else + rating = "4"; + dd_save_text(dd, FILENAME_RATING, rating); + + /* Get the function name from the crash frame. */ + struct btp_frame *crash_frame = btp_backtrace_get_crash_frame(backtrace); + if (crash_frame) + { + if (crash_frame->function_name && + 0 != strcmp(crash_frame->function_name, "??")) + { + dd_save_text(dd, FILENAME_CRASH_FUNCTION, crash_frame->function_name); + } + btp_frame_free(crash_frame); + } + btp_backtrace_free(backtrace); + dd_close(dd); + + free(executable); + free(package); + + return 0; +} |