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Look for http redirection errors from SymSrv in google_converter.

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Change-Id: Ic793f2a5baceb342154c995c43bf60b6f57612a5
Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/3689705
Reviewed-by: Ivan Penkov <ivanpe@chromium.org>
This commit is contained in:
Nelson Billing 2022-06-03 15:47:48 -07:00
parent 41a11409d6
commit 737e2cd338
3 changed files with 81 additions and 32 deletions
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59
src/tools/windows/converter/ms_symbol_server_converter.cc
View File

@ -128,11 +128,15 @@ bool GUIDOrSignatureIdentifier::InitializeFromString(
#undef SSCANF
MSSymbolServerConverter::MSSymbolServerConverter(
const string& local_cache, const vector<string>& symbol_servers)
const string& local_cache,
const vector<string>& symbol_servers,
bool trace_symsrv)
: symbol_path_(),
fail_dns_(false),
fail_timeout_(false),
fail_not_found_(false) {
fail_http_https_redir_(false),
fail_not_found_(false),
trace_symsrv_(trace_symsrv) {
// Setting local_cache can be done without verifying that it exists because
// SymSrv will create it if it is missing - any creation failures will occur
// at that time, so there's nothing to check here, making it safe to
@ -342,6 +346,10 @@ MSSymbolServerConverter::LocateFile(const string& debug_or_code_file,
return LOCATE_RETRY;
}
if (fail_http_https_redir_) {
return LOCATE_HTTP_HTTPS_REDIR;
}
// This is an authoritiative file-not-found message.
if (fail_not_found_) {
fprintf(stderr,
@ -425,6 +433,10 @@ BOOL CALLBACK MSSymbolServerConverter::SymCallback(HANDLE process,
// message does not use the entire string but is appended to the URL
// that SymSrv attempted to retrieve.
string desc(cba_event->desc);
if (self->trace_symsrv_) {
fprintf(stderr, "LocateFile: SymCallback: action desc '%s'\n",
desc.c_str());
}
// desc_action maps strings (in desc) to boolean pointers that are to
// be set to true if the string matches.
@ -434,29 +446,32 @@ BOOL CALLBACK MSSymbolServerConverter::SymCallback(HANDLE process,
};
static const desc_action desc_actions[] = {
// When a DNS error occurs, it could be indiciative of network
// problems.
{ "SYMSRV: The server name or address could not be resolved\n",
&self->fail_dns_ },
// When a DNS error occurs, it could be indiciative of network
// problems.
{"SYMSRV: The server name or address could not be resolved\n",
&self->fail_dns_},
// This message is produced if no connection is opened.
{ "SYMSRV: A connection with the server could not be established\n",
&self->fail_timeout_ },
// This message is produced if no connection is opened.
{"SYMSRV: A connection with the server could not be established\n",
&self->fail_timeout_},
// This message is produced if a connection is established but the
// server fails to respond to the HTTP request.
{ "SYMSRV: The operation timed out\n",
&self->fail_timeout_ },
// This message is produced if a connection is established but the
// server fails to respond to the HTTP request.
{"SYMSRV: The operation timed out\n", &self->fail_timeout_},
// This message is produced when the requested file is not found,
// even if one or more of the above messages are also produced.
// It's trapped to distinguish between not-found and unknown-failure
// conditions. Note that this message will not be produced if a
// connection is established and the server begins to respond to the
// HTTP request but does not finish transmitting the file.
{ " not found\n",
&self->fail_not_found_ }
};
// This message is produced if the server is redirecting us from http
// to https. When this happens SymSrv will fail and we need to use
// the https URL in our call-- we've made a mistake.
{"ERROR_INTERNET_HTTP_TO_HTTPS_ON_REDIR\n",
&self->fail_http_https_redir_},
// This message is produced when the requested file is not found,
// even if one or more of the above messages are also produced.
// It's trapped to distinguish between not-found and unknown-failure
// conditions. Note that this message will not be produced if a
// connection is established and the server begins to respond to the
// HTTP request but does not finish transmitting the file.
{" not found\n", &self->fail_not_found_}};
for (int desc_action_index = 0;
desc_action_index <

16
src/tools/windows/converter/ms_symbol_server_converter.h
View File

@ -127,9 +127,10 @@ class MSSymbolServerConverter {
public:
enum LocateResult {
LOCATE_FAILURE = 0,
LOCATE_NOT_FOUND, // Authoritative: the file is not present.
LOCATE_RETRY, // Transient (network?) error, try again later.
LOCATE_SUCCESS
LOCATE_NOT_FOUND, // Authoritative: the file is not present.
LOCATE_RETRY, // Transient (network?) error, try again later.
LOCATE_SUCCESS,
LOCATE_HTTP_HTTPS_REDIR
};
// Create a new object. local_cache is the location (pathname) of a local
@ -141,8 +142,11 @@ class MSSymbolServerConverter {
// store to try. The vector must contain at least one string. None of the
// strings passed to this constructor may contain asterisk ('*') or semicolon
// (';') characters, as the symbol engine uses these characters as separators.
// If |trace_symsrv| is set then callbacks from SymSrv will be logged to
// stderr.
MSSymbolServerConverter(const string& local_cache,
const vector<string>& symbol_servers);
const vector<string>& symbol_servers,
bool trace_symsrv);
// Locates the PE file (DLL or EXE) specified by the identifying information
// in |missing|, by checking the symbol stores identified when the object
@ -226,8 +230,12 @@ class MSSymbolServerConverter {
// SymFindFileInPath fails for an expected reason.
bool fail_dns_; // DNS failures (fail_not_found_ will also be set).
bool fail_timeout_; // Timeouts (fail_not_found_ will also be set).
bool fail_http_https_redir_; // Bad URL-- we should be using HTTPS.
bool fail_not_found_; // The file could not be found. If this is the only
// fail_* member set, then it is authoritative.
// If set then callbacks from SymSrv will be logged to stderr.
bool trace_symsrv_;
};
} // namespace google_breakpad

38
src/tools/windows/converter_exe/converter.cc
View File

@ -303,9 +303,7 @@ static bool SafeToMakeExternalRequest(const MissingSymbolInfo& missing_info,
// Converter options derived from command line parameters.
struct ConverterOptions {
ConverterOptions()
: report_fetch_failures(true) {
}
ConverterOptions() : report_fetch_failures(true), trace_symsrv(false) {}
~ConverterOptions() {
}
@ -352,6 +350,9 @@ struct ConverterOptions {
// Owned and cleaned up by this struct.
std::regex blacklist_regex;
// If set then SymSrv callbacks are logged to stderr.
bool trace_symsrv;
private:
// DISABLE_COPY_AND_ASSIGN
ConverterOptions(const ConverterOptions&);
@ -416,7 +417,8 @@ static void ConvertMissingSymbolFile(const MissingSymbolInfo& missing_info,
FprintfFlush(stderr, "Making internal request for %s (%s)\n",
missing_info.debug_file.c_str(),
missing_info.debug_identifier.c_str());
MSSymbolServerConverter converter(options.local_cache_path, msss_servers);
MSSymbolServerConverter converter(options.local_cache_path, msss_servers,
options.trace_symsrv);
located = converter.LocateAndConvertSymbolFile(
missing_info,
/*keep_symbol_file=*/true,
@ -470,6 +472,16 @@ static void ConvertMissingSymbolFile(const MissingSymbolInfo& missing_info,
// a record.
break;
case MSSymbolServerConverter::LOCATE_HTTP_HTTPS_REDIR:
FprintfFlush(
stderr,
"LocateResult = LOCATE_HTTP_HTTPS_REDIR\n"
"One of the specified URLs is using HTTP, which causes a redirect "
"from the server to HTTPS, which causes the SymSrv lookup to "
"fail.\n"
"This URL must be replaced with the correct HTTPS URL.\n");
break;
case MSSymbolServerConverter::LOCATE_FAILURE:
FprintfFlush(stderr, "LocateResult = LOCATE_FAILURE\n");
// LocateAndConvertSymbolFile printed an error message.
@ -503,8 +515,8 @@ static void ConvertMissingSymbolFile(const MissingSymbolInfo& missing_info,
FprintfFlush(stderr, "Making external request for %s (%s)\n",
missing_info.debug_file.c_str(),
missing_info.debug_identifier.c_str());
MSSymbolServerConverter external_converter(options.local_cache_path,
msss_servers);
MSSymbolServerConverter external_converter(
options.local_cache_path, msss_servers, options.trace_symsrv);
located = external_converter.LocateAndConvertSymbolFile(
missing_info,
/*keep_symbol_file=*/true,
@ -577,6 +589,15 @@ static void ConvertMissingSymbolFile(const MissingSymbolInfo& missing_info,
missing_info.version.c_str());
break;
case MSSymbolServerConverter::LOCATE_HTTP_HTTPS_REDIR:
FprintfFlush(
stderr,
"LocateResult = LOCATE_HTTP_HTTPS_REDIR\n"
"One of the specified URLs is using HTTP, which causes a redirect "
"from the server to HTTPS, which causes the SymSrv lookup to fail.\n"
"This URL must be replaced with the correct HTTPS URL.\n");
break;
case MSSymbolServerConverter::LOCATE_FAILURE:
FprintfFlush(stderr, "LocateResult = LOCATE_FAILURE\n");
// LocateAndConvertSymbolFile printed an error message.
@ -708,6 +729,8 @@ static int usage(const char* program_name) {
" -t <fetch_failure_url> URL to report symbol fetch failure\n"
" -b <regex> Regex used to blacklist files to\n"
" prevent external symbol requests\n"
" -tss If set then SymSrv callbacks will be\n"
" traced to stderr.\n"
" Note that any server specified by -f or -n that starts with \\filer\n"
" will be treated as internal, and all others as external.\n",
program_name);
@ -794,6 +817,9 @@ int main(int argc, char** argv) {
printf("Getting the list of missing symbols from a file. Fetch failures"
" will not be reported.\n");
options.report_fetch_failures = false;
} else if (option == "-tss") {
printf("Tracing SymSrv callbacks to stderr.\n");
options.trace_symsrv = true;
} else if (option == "-t") {
if (!WindowsStringUtils::safe_mbstowcs(
value,