Local crash processing experiments
This commit is contained in:
Asher Baker
parent
e01565fc0f
commit
9548b0c025
@ -81,6 +81,7 @@ class SM:
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self.compiler.AddToListVar('CFLAGS', '-Wno-uninitialized')
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self.compiler.AddToListVar('CFLAGS', '-Wno-unused')
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self.compiler.AddToListVar('CFLAGS', '-Wno-switch')
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self.compiler.AddToListVar('CFLAGS', '-Wno-implicit-exception-spec-mismatch')
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self.compiler.AddToListVar('CFLAGS', '-msse')
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self.compiler.AddToListVar('CFLAGS', '-g3')
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self.compiler.AddToListVar('CFLAGS', '-m32')
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@ -21,6 +21,7 @@ def BuildBreakpad():
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breakpad.AddCommand(ShellCommand('CXXFLAGS=-m32 CFLAGS=-m32 CPPFLAGS=-m32 ' + os.path.join(AMBuild.sourceFolder, 'breakpad', 'src', 'configure')))
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breakpad.AddCommand(ShellCommand('make src/client/linux/libbreakpad_client.a'))
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breakpad.AddCommand(ShellCommand('make src/libbreakpad.a src/third_party/libdisasm/libdisasm.a'))
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elif AMBuild.target['platform'] in ['windows']:
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if osutil.FileExists(os.path.join(AMBuild.sourceFolder, 'breakpad', 'src', 'client', 'windows', 'handler', 'Release', 'lib', 'exception_handler.lib')):
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@ -23,16 +23,24 @@ def BuildEverything():
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binary.AddSourceFiles('test', [
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'test.cpp',
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'sha256.c',
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])
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if AMBuild.target['platform'] in ['linux']:
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link = os.path.join(AMBuild.outputFolder, extension.workFolder, 'libbreakpad_client.a')
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target = os.path.join(AMBuild.outputFolder, 'breakpad', 'src', 'client', 'linux', 'libbreakpad_client.a')
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libs = [
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('libbreakpad_client.a', os.path.join('breakpad', 'src', 'client', 'linux', 'libbreakpad_client.a')),
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('libbreakpad.a', os.path.join('breakpad', 'src', 'libbreakpad.a')),
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('libdisasm.a', os.path.join('breakpad', 'src', 'third_party', 'libdisasm', 'libdisasm.a')),
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]
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for lib, target in libs:
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link = os.path.join(AMBuild.outputFolder, extension.workFolder, lib)
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target = os.path.join(AMBuild.outputFolder, target)
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try:
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os.lstat(link)
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except:
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extension.AddCommand(SymlinkCommand(link, target))
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binary.AddObjectFiles(['libbreakpad_client.a'])
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binary.AddObjectFiles([lib])
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elif AMBuild.target['platform'] in ['windows']:
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libs = ['exception_handler', 'common']
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158
test/sha256.c
Normal file
158
test/sha256.c
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@ -0,0 +1,158 @@
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/*********************************************************************
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* Filename: sha256.c
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* Author: Brad Conte (brad AT bradconte.com)
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* Copyright:
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* Disclaimer: This code is presented "as is" without any guarantees.
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* Details: Implementation of the SHA-256 hashing algorithm.
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SHA-256 is one of the three algorithms in the SHA2
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specification. The others, SHA-384 and SHA-512, are not
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offered in this implementation.
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Algorithm specification can be found here:
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* http://csrc.nist.gov/publications/fips/fips180-2/fips180-2withchangenotice.pdf
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This implementation uses little endian byte order.
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*********************************************************************/
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/*************************** HEADER FILES ***************************/
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#include <stdlib.h>
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#include <memory.h>
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#include "sha256.h"
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/****************************** MACROS ******************************/
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#define ROTLEFT(a,b) (((a) << (b)) | ((a) >> (32-(b))))
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#define ROTRIGHT(a,b) (((a) >> (b)) | ((a) << (32-(b))))
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#define CH(x,y,z) (((x) & (y)) ^ (~(x) & (z)))
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#define MAJ(x,y,z) (((x) & (y)) ^ ((x) & (z)) ^ ((y) & (z)))
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#define EP0(x) (ROTRIGHT(x,2) ^ ROTRIGHT(x,13) ^ ROTRIGHT(x,22))
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#define EP1(x) (ROTRIGHT(x,6) ^ ROTRIGHT(x,11) ^ ROTRIGHT(x,25))
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#define SIG0(x) (ROTRIGHT(x,7) ^ ROTRIGHT(x,18) ^ ((x) >> 3))
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#define SIG1(x) (ROTRIGHT(x,17) ^ ROTRIGHT(x,19) ^ ((x) >> 10))
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/**************************** VARIABLES *****************************/
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static const WORD k[64] = {
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0x428a2f98,0x71374491,0xb5c0fbcf,0xe9b5dba5,0x3956c25b,0x59f111f1,0x923f82a4,0xab1c5ed5,
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0xd807aa98,0x12835b01,0x243185be,0x550c7dc3,0x72be5d74,0x80deb1fe,0x9bdc06a7,0xc19bf174,
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0xe49b69c1,0xefbe4786,0x0fc19dc6,0x240ca1cc,0x2de92c6f,0x4a7484aa,0x5cb0a9dc,0x76f988da,
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0x983e5152,0xa831c66d,0xb00327c8,0xbf597fc7,0xc6e00bf3,0xd5a79147,0x06ca6351,0x14292967,
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0x27b70a85,0x2e1b2138,0x4d2c6dfc,0x53380d13,0x650a7354,0x766a0abb,0x81c2c92e,0x92722c85,
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0xa2bfe8a1,0xa81a664b,0xc24b8b70,0xc76c51a3,0xd192e819,0xd6990624,0xf40e3585,0x106aa070,
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0x19a4c116,0x1e376c08,0x2748774c,0x34b0bcb5,0x391c0cb3,0x4ed8aa4a,0x5b9cca4f,0x682e6ff3,
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0x748f82ee,0x78a5636f,0x84c87814,0x8cc70208,0x90befffa,0xa4506ceb,0xbef9a3f7,0xc67178f2
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};
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/*********************** FUNCTION DEFINITIONS ***********************/
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void sha256_transform(SHA256_CTX *ctx, const BYTE data[])
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{
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WORD a, b, c, d, e, f, g, h, i, j, t1, t2, m[64];
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for (i = 0, j = 0; i < 16; ++i, j += 4)
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m[i] = (data[j] << 24) | (data[j + 1] << 16) | (data[j + 2] << 8) | (data[j + 3]);
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for ( ; i < 64; ++i)
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m[i] = SIG1(m[i - 2]) + m[i - 7] + SIG0(m[i - 15]) + m[i - 16];
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a = ctx->state[0];
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b = ctx->state[1];
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c = ctx->state[2];
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d = ctx->state[3];
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e = ctx->state[4];
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f = ctx->state[5];
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g = ctx->state[6];
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h = ctx->state[7];
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for (i = 0; i < 64; ++i) {
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t1 = h + EP1(e) + CH(e,f,g) + k[i] + m[i];
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t2 = EP0(a) + MAJ(a,b,c);
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h = g;
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g = f;
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f = e;
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e = d + t1;
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d = c;
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c = b;
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b = a;
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a = t1 + t2;
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}
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ctx->state[0] += a;
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ctx->state[1] += b;
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ctx->state[2] += c;
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ctx->state[3] += d;
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ctx->state[4] += e;
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ctx->state[5] += f;
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ctx->state[6] += g;
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ctx->state[7] += h;
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}
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void sha256_init(SHA256_CTX *ctx)
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{
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ctx->datalen = 0;
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ctx->bitlen = 0;
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ctx->state[0] = 0x6a09e667;
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ctx->state[1] = 0xbb67ae85;
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ctx->state[2] = 0x3c6ef372;
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ctx->state[3] = 0xa54ff53a;
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ctx->state[4] = 0x510e527f;
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ctx->state[5] = 0x9b05688c;
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ctx->state[6] = 0x1f83d9ab;
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ctx->state[7] = 0x5be0cd19;
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}
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void sha256_update(SHA256_CTX *ctx, const BYTE data[], size_t len)
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{
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WORD i;
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for (i = 0; i < len; ++i) {
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ctx->data[ctx->datalen] = data[i];
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ctx->datalen++;
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if (ctx->datalen == 64) {
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sha256_transform(ctx, ctx->data);
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ctx->bitlen += 512;
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ctx->datalen = 0;
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}
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}
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}
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void sha256_final(SHA256_CTX *ctx, BYTE hash[])
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{
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WORD i;
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i = ctx->datalen;
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// Pad whatever data is left in the buffer.
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if (ctx->datalen < 56) {
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ctx->data[i++] = 0x80;
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while (i < 56)
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ctx->data[i++] = 0x00;
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}
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else {
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ctx->data[i++] = 0x80;
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while (i < 64)
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ctx->data[i++] = 0x00;
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sha256_transform(ctx, ctx->data);
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memset(ctx->data, 0, 56);
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}
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// Append to the padding the total message's length in bits and transform.
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ctx->bitlen += ctx->datalen * 8;
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ctx->data[63] = ctx->bitlen;
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ctx->data[62] = ctx->bitlen >> 8;
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ctx->data[61] = ctx->bitlen >> 16;
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ctx->data[60] = ctx->bitlen >> 24;
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ctx->data[59] = ctx->bitlen >> 32;
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ctx->data[58] = ctx->bitlen >> 40;
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ctx->data[57] = ctx->bitlen >> 48;
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ctx->data[56] = ctx->bitlen >> 56;
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sha256_transform(ctx, ctx->data);
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// Since this implementation uses little endian byte ordering and SHA uses big endian,
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// reverse all the bytes when copying the final state to the output hash.
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for (i = 0; i < 4; ++i) {
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hash[i] = (ctx->state[0] >> (24 - i * 8)) & 0x000000ff;
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hash[i + 4] = (ctx->state[1] >> (24 - i * 8)) & 0x000000ff;
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hash[i + 8] = (ctx->state[2] >> (24 - i * 8)) & 0x000000ff;
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hash[i + 12] = (ctx->state[3] >> (24 - i * 8)) & 0x000000ff;
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hash[i + 16] = (ctx->state[4] >> (24 - i * 8)) & 0x000000ff;
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hash[i + 20] = (ctx->state[5] >> (24 - i * 8)) & 0x000000ff;
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hash[i + 24] = (ctx->state[6] >> (24 - i * 8)) & 0x000000ff;
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hash[i + 28] = (ctx->state[7] >> (24 - i * 8)) & 0x000000ff;
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}
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}
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34
test/sha256.h
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34
test/sha256.h
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@ -0,0 +1,34 @@
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/*********************************************************************
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* Filename: sha256.h
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* Author: Brad Conte (brad AT bradconte.com)
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* Copyright:
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* Disclaimer: This code is presented "as is" without any guarantees.
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* Details: Defines the API for the corresponding SHA1 implementation.
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*********************************************************************/
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#ifndef SHA256_H
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#define SHA256_H
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/*************************** HEADER FILES ***************************/
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#include <stddef.h>
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/****************************** MACROS ******************************/
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#define SHA256_BLOCK_SIZE 32 // SHA256 outputs a 32 byte digest
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/**************************** DATA TYPES ****************************/
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typedef unsigned char BYTE; // 8-bit byte
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typedef unsigned int WORD; // 32-bit word, change to "long" for 16-bit machines
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typedef struct {
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BYTE data[64];
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WORD datalen;
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unsigned long long bitlen;
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WORD state[8];
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} SHA256_CTX;
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/*********************** FUNCTION DECLARATIONS **********************/
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void sha256_init(SHA256_CTX *ctx);
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void sha256_update(SHA256_CTX *ctx, const BYTE data[], size_t len);
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void sha256_final(SHA256_CTX *ctx, BYTE hash[]);
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#endif // SHA256_H
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122
test/test.cpp
122
test/test.cpp
@ -2,11 +2,39 @@
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#include "common/linux/linux_libc_support.h"
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#include "third_party/lss/linux_syscall_support.h"
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#include <google_breakpad/processor/minidump.h>
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#include <google_breakpad/processor/minidump_processor.h>
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#include <google_breakpad/processor/process_state.h>
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#include <google_breakpad/processor/call_stack.h>
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#include <google_breakpad/processor/stack_frame.h>
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#include <processor/pathname_stripper.h>
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#include <signal.h>
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#include <dirent.h>
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#include <unistd.h>
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#include <setjmp.h>
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static bool dumpCallback(const google_breakpad::MinidumpDescriptor &descriptor, void *context, bool succeeded)
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#include <streambuf>
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extern "C" {
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#include "sha256.h"
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}
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using google_breakpad::MinidumpDescriptor;
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using google_breakpad::ExceptionHandler;
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using google_breakpad::Minidump;
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using google_breakpad::MinidumpProcessor;
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using google_breakpad::ProcessState;
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using google_breakpad::ProcessResult;
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using google_breakpad::CallStack;
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using google_breakpad::StackFrame;
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using google_breakpad::PathnameStripper;
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sigjmp_buf envbuf;
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char path[1024];
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static bool dumpCallback(const MinidumpDescriptor &descriptor, void *context, bool succeeded)
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{
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if (succeeded) {
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sys_write(STDOUT_FILENO, "Wrote minidump to: ", 19);
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@ -17,17 +45,105 @@ static bool dumpCallback(const google_breakpad::MinidumpDescriptor &descriptor,
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sys_write(STDOUT_FILENO, descriptor.path(), my_strlen(descriptor.path()));
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sys_write(STDOUT_FILENO, "\n", 1);
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my_strlcpy(path, descriptor.path(), sizeof(path));
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siglongjmp(envbuf, 1);
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return succeeded;
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}
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int main(int argc, char *argv[])
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{
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google_breakpad::MinidumpDescriptor descriptor(".");
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google_breakpad::ExceptionHandler *handler = new google_breakpad::ExceptionHandler(descriptor, NULL, dumpCallback, NULL, true, -1);
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bool generateCrash = false;
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if (argc <= 1) {
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generateCrash = true;
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if (sigsetjmp(envbuf, 0) == 0) {
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MinidumpDescriptor descriptor(".");
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ExceptionHandler *handler = new ExceptionHandler(descriptor, NULL, dumpCallback, NULL, true, -1);
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// Test shit here.
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__builtin_trap();
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delete handler;
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return 0;
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}
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printf("Returned from signal handler, path: %s\n", path);
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argc = 2;
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}
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for (int i = 1; i < argc; ++i) {
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if (!generateCrash) {
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my_strlcpy(path, argv[i], sizeof(path));
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}
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MinidumpProcessor minidumpProcessor(nullptr, nullptr);
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std::streambuf *old = std::clog.rdbuf();
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std::clog.rdbuf(nullptr);
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ProcessState processState;
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ProcessResult processResult = minidumpProcessor.Process(path, &processState);
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std::clog.rdbuf(old);
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if (processResult != google_breakpad::PROCESS_OK) {
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continue;
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}
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int requestingThread = processState.requesting_thread();
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if (requestingThread == -1) {
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requestingThread = 0;
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}
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const CallStack *stack = processState.threads()->at(requestingThread);
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if (!stack) {
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fprintf(stderr, "Minidump missing stack!\n");
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continue;
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}
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int frameCount = stack->frames()->size();
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if (frameCount > 10) {
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frameCount = 10;
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}
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SHA256_CTX hashctx;
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sha256_init(&hashctx);
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sha256_update(&hashctx, (const unsigned char *)processState.crash_reason().data(), processState.crash_reason().length());
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//printf("1|%d|%s|%x|%d", processState.crashed(), processState.crash_reason().c_str(), (intptr_t)processState.crash_address(), requestingThread);
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for (int frameIndex = 0; frameIndex < frameCount; ++frameIndex) {
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const StackFrame *frame = stack->frames()->at(frameIndex);
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if (frame->module) {
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auto codeFile = PathnameStripper::File(frame->module->code_file());
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auto debugId = frame->module->debug_identifier();
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auto moduleOffset = frame->ReturnAddress() - frame->module->base_address();
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sha256_update(&hashctx, (const unsigned char *)codeFile.data(), codeFile.length());
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sha256_update(&hashctx, (const unsigned char *)debugId.data(), debugId.length());
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sha256_update(&hashctx, (const unsigned char *)&moduleOffset, sizeof(moduleOffset));
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//printf("|%d|%s|%s|%x", frame->trust, codeFile.c_str(), debugId.c_str(), (intptr_t)moduleOffset);
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} else {
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//printf("|%d|||%x", frame->trust, (intptr_t)frame->ReturnAddress());
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}
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}
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//printf("\n");
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unsigned char hash[SHA256_BLOCK_SIZE];
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sha256_final(&hashctx, hash);
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for (int c = 0; c < SHA256_BLOCK_SIZE; ++c) {
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printf("%02x", hash[c]);
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}
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printf("\n");
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}
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if (generateCrash) {
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unlink(path);
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}
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return 0;
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}
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Block a user