[6] | 1 | /**
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| 2 | * cf_debug.c
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| 3 | */
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| 4 | #include "cf_debug.h"
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| 5 | #include "cf_local.h"
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| 6 |
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| 7 | #include <stdio.h>
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| 8 | #include <stdlib.h>
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| 9 | #include <ctype.h>
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| 10 | #include <stdarg.h>
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[9] | 11 | #include <string.h>
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[6] | 12 |
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| 13 | #ifdef _WIN32
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[7] | 14 | # include <io.h>
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[6] | 15 | #else
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| 16 | # include <unistd.h>
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| 17 | #endif
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| 18 |
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| 19 | #define IS_READABLE_CHAR(__c) (' ' <= __c && __c <= '~')
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| 20 |
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| 21 | #define CHECK_INVALID_CTX(__ctx) \
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| 22 | if (__ctx == NULL) \
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| 23 | return CF_ERROR_DEBUG_INVALID_CTX
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[10] | 24 |
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[6] | 25 | #define GET_CTX_OSTREAM(__ctx) \
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| 26 | ((((CF_DEBUG_CTX *)__ctx)->fp == NULL) \
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| 27 | ? stderr \
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| 28 | : ((CF_DEBUG_CTX *)__ctx)->fp)
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| 29 |
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| 30 | typedef struct __cf_debug_callstack__
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| 31 | {
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[9] | 32 | char file[NAME_LENGTH + 1];
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[6] | 33 | char func[NAME_LENGTH + 1];
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| 34 | int line;
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| 35 |
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| 36 | struct __cf_debug_callstack__ * caller;
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| 37 | } S_CF_DEBUG_CALLSTACK, CF_DEBUG_CALLSTACK;
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| 38 |
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| 39 | /* implementation of CF_Debug_Ctx */
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[10] | 40 | typedef struct __cf_debug_ctx__
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[6] | 41 | {
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| 42 | char file[NAME_LENGTH + 1];
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| 43 | char func[NAME_LENGTH + 1];
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| 44 | int line;
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| 45 |
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| 46 | FILE * fp;
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| 47 |
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| 48 | CF_DEBUG_CALLSTACK callstack;
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| 49 | } S_CF_DEBUG_CTX, CF_DEBUG_CTX;
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| 50 |
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| 51 | void
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| 52 | CF_Debug_VA_Message (CF_DEBUG_CTX * ctx,
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| 53 | const char * fmt,
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| 54 | va_list valist)
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| 55 | {
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| 56 | fprintf (GET_CTX_OSTREAM (ctx), "[DEBUG][%s %s(%d)] ",
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| 57 | ctx->file,
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| 58 | ctx->func,
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| 59 | ctx->line);
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| 60 | vfprintf (GET_CTX_OSTREAM (ctx), fmt, valist);
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| 61 | }
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| 62 |
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| 63 | CF_Debug_Ctx
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| 64 | CF_Debug_CreateCtx (void)
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| 65 | {
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| 66 | CF_DEBUG_CTX * ctx = NULL;
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| 67 |
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| 68 | ctx = (CF_DEBUG_CTX *) calloc (sizeof (CF_DEBUG_CTX), 1);
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| 69 |
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| 70 | return (CF_Debug_Ctx) ctx;
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| 71 | }
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| 72 |
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| 73 | int
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| 74 | CF_Debug_DestroyCtx (CF_Debug_Ctx ctx)
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| 75 | {
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| 76 | CF_DEBUG_CTX * context = (CF_DEBUG_CTX *) ctx;
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| 77 | CF_DEBUG_CALLSTACK * pop = NULL;
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| 78 | CF_DEBUG_CALLSTACK * next = NULL;
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| 79 |
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| 80 | CHECK_INVALID_CTX (ctx);
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| 81 |
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| 82 | if (context->fp != NULL)
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| 83 | fclose (context->fp);
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| 84 |
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| 85 | for (pop = next = context->callstack.caller ; pop ; pop = next)
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| 86 | {
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| 87 | next = next->caller;
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| 88 | free (pop);
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| 89 | }
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| 90 |
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| 91 | free (context);
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| 92 |
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| 93 | return CF_OK;
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| 94 | }
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| 95 |
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| 96 | int
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| 97 | CF_Debug_SetOutputFD (CF_Debug_Ctx ctx,
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| 98 | int fd)
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| 99 | {
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| 100 | int result = 0;
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| 101 | int dupfd = 0;
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| 102 |
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| 103 | CF_DEBUG_CTX * context = (CF_DEBUG_CTX *) ctx;
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| 104 | FILE * fp = NULL;
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| 105 |
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| 106 | CHECK_INVALID_CTX (ctx);
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| 107 |
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| 108 | TRY
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| 109 | {
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| 110 | dupfd = dup (fd);
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| 111 | if (dupfd < 0)
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| 112 | {
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| 113 | result = -1;
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| 114 | TRY_BREAK;
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| 115 | }
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| 116 |
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| 117 | fp = fdopen (dupfd, "a+");
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| 118 | if (fp == NULL)
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| 119 | {
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| 120 | close (dupfd);
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| 121 | result = -2;
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| 122 | TRY_BREAK;
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| 123 | }
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| 124 |
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| 125 | context->fp = fp;
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| 126 | }
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| 127 | CATCH_IF (result < 0)
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| 128 | {
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| 129 | return CF_ERROR_DEBUG_SET_OUTPUT_FD;
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| 130 | }
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| 131 |
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| 132 | return CF_OK;
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| 133 | }
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| 134 |
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| 135 | int
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| 136 | CF_Debug_Trace (CF_Debug_Ctx ctx,
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| 137 | const char * fmt, ...)
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| 138 | {
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| 139 | va_list valist;
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| 140 |
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| 141 | CHECK_INVALID_CTX (ctx);
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| 142 |
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| 143 | va_start (valist, fmt);
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| 144 | CF_Debug_VA_Message ((CF_DEBUG_CTX *) ctx, fmt, valist);
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| 145 | va_end (valist);
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| 146 |
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| 147 | return CF_OK;
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| 148 | }
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| 149 |
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| 150 | int
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| 151 | CF_Debug_TraceBin (CF_Debug_Ctx ctx,
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| 152 | const unsigned char * bin,
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| 153 | const int len,
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| 154 | const char * fmt, ...)
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| 155 | {
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| 156 | int i, j;
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| 157 | va_list valist;
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| 158 | FILE * fp = GET_CTX_OSTREAM (ctx);
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| 159 |
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| 160 | CHECK_INVALID_CTX (ctx);
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| 161 |
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| 162 | va_start (valist, fmt);
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| 163 | CF_Debug_VA_Message ((CF_DEBUG_CTX *) ctx, fmt, valist);
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| 164 |
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| 165 | for (i = 0 ; i < len ; i += 16)
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| 166 | {
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| 167 | fprintf (fp, "[DEBUG][%s %s(%d)] ", __FILE__, __func__, __LINE__);
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| 168 | fprintf (fp, "%06x : ", i);
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| 169 |
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| 170 | for (j = 0 ; j < 16 ; j++)
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| 171 | {
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| 172 | if (i+j < len)
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| 173 | fprintf (fp, "%02x ", bin[i+j]);
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| 174 | else
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| 175 | fprintf (fp, " ");
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| 176 | }
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| 177 | fprintf (fp, " ");
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| 178 |
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| 179 | for (j = 0 ; j < 16 ; j++)
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| 180 | {
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| 181 | if (i+j < len)
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| 182 | fprintf (fp, "%c", IS_READABLE_CHAR(bin[i+j]) ? bin[i+j] : '.');
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| 183 | }
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| 184 | fprintf (fp, "\n");
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| 185 | }
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| 186 |
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| 187 | return CF_OK;
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| 188 | }
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| 189 |
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| 190 | int
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| 191 | CF_Debug_CallStackPush (CF_Debug_Ctx ctx,
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[9] | 192 | const char * file,
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[6] | 193 | const char * func,
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| 194 | const int line)
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| 195 | {
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| 196 | CF_DEBUG_CTX * context = (CF_DEBUG_CTX *) ctx;
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| 197 | CF_DEBUG_CALLSTACK * push = NULL;
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| 198 |
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| 199 | CHECK_INVALID_CTX (ctx);
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| 200 |
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| 201 | push = (CF_DEBUG_CALLSTACK *) calloc (sizeof (CF_DEBUG_CALLSTACK), 1);
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| 202 | if (push == NULL)
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| 203 | return CF_ERROR_DEBUG_PUSH_CALLSTACK;
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| 204 |
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[9] | 205 | /* push to callstack */
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| 206 | sprintf (push->file, "%s", file);
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[6] | 207 | sprintf (push->func, "%s", func);
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| 208 | push->line = line;
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| 209 | push->caller = context->callstack.caller;
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| 210 | context->callstack.caller = push;
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| 211 |
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[9] | 212 | /* set current context */
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| 213 | sprintf (context->file, "%s", file);
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| 214 | sprintf (context->func, "%s", func);
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| 215 | context->line = line;
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| 216 |
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[6] | 217 | return CF_OK;
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| 218 | }
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| 219 |
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| 220 | int
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| 221 | CF_Debug_CallStackPop (CF_Debug_Ctx ctx,
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| 222 | CF_Debug_CallStack * callstack)
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| 223 | {
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| 224 | CF_DEBUG_CTX * context = (CF_DEBUG_CTX *) ctx;
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| 225 | CF_DEBUG_CALLSTACK * pop = NULL;
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| 226 |
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| 227 | CHECK_INVALID_CTX (ctx);
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| 228 |
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| 229 | pop = context->callstack.caller;
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| 230 | if (pop == NULL)
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| 231 | return CF_ERROR_DEBUG_POP_CALLSTACK;
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| 232 |
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[9] | 233 | if (callstack != NULL)
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| 234 | {
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| 235 | sprintf (callstack->function, "%s", pop->func);
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| 236 | callstack->line = pop->line;
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| 237 | }
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[6] | 238 |
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[9] | 239 | memset (context->file, 0x00, sizeof (context->file));
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| 240 | memset (context->func, 0x00, sizeof (context->func));
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| 241 | context->line = 0;
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| 242 |
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| 243 | /* restore current context */
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| 244 | if (pop->caller != NULL)
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| 245 | {
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| 246 | sprintf (context->file, "%s", pop->caller->file);
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| 247 | sprintf (context->func, "%s", pop->caller->func);
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| 248 | context->line = pop->caller->line;
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| 249 | context->callstack.caller = pop->caller;
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| 250 | }
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| 251 |
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[6] | 252 | free (pop);
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| 253 |
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| 254 | return CF_OK;
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| 255 | }
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