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 <stdlib.h>
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8 | #include <ctype.h>
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9 | #include <stdarg.h>
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10 | #include <string.h>
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11 |
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12 | #ifdef _WIN32
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13 | # include <io.h>
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14 | #else
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15 | # include <unistd.h>
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16 | #endif
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17 |
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18 | #define IS_READABLE_CHAR(__c) (' ' <= __c && __c <= '~')
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19 |
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20 | #define CHECK_INVALID_CTX(__ctx) \
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21 | if (__ctx == NULL) \
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22 | return CF_ERROR_DEBUG_INVALID_CTX
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23 |
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24 | #define GET_CTX_OSTREAM(__ctx) \
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25 | ((((CF_DEBUG_CTX *)__ctx)->fp == NULL) \
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26 | ? stderr \
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27 | : ((CF_DEBUG_CTX *)__ctx)->fp)
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28 |
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29 | typedef struct __cf_debug_callstack__
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30 | {
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31 | char file[NAME_LENGTH + 1];
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32 | char func[NAME_LENGTH + 1];
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33 | int line;
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34 |
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35 | struct __cf_debug_callstack__ * caller;
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36 | } S_CF_DEBUG_CALLSTACK, CF_DEBUG_CALLSTACK;
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37 |
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38 | /* implementation of CF_Debug_Ctx */
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39 | typedef struct __cf_debug_ctx__
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40 | {
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41 | char file[NAME_LENGTH + 1];
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42 | char func[NAME_LENGTH + 1];
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43 | int line;
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44 |
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45 | FILE * fp;
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46 |
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47 | CF_DEBUG_CALLSTACK callstack;
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48 | } S_CF_DEBUG_CTX, CF_DEBUG_CTX;
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49 |
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50 | int
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51 | CF_Debug_Local_Print (FILE * fp,
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52 | const char * file,
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53 | const char * func,
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54 | const int line,
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55 | const char * fmt,
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56 | va_list valist)
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57 | {
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58 | fprintf (fp, "[DEBUG][%s:%d][%s] ", file, line, func);
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59 | vfprintf (fp, fmt, valist);
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60 |
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61 | return CF_OK;
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62 | }
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63 |
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64 | int
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65 | CF_Debug_Local_PrintBin (FILE * fp,
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66 | const char * file,
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67 | const char * func,
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68 | const int line,
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69 | const unsigned char * bin,
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70 | const int len)
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71 | {
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72 | int i, j;
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73 |
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74 | for (i = 0 ; i < len ; i += 16)
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75 | {
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76 | fprintf (fp, "[DEBUG][%s:%d][%s] ", file, line, func);
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77 | fprintf (fp, "%06x : ", i);
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78 |
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79 | for (j = 0 ; j < 16 ; j++)
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80 | {
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81 | if (i+j < len)
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82 | fprintf (fp, "%02x ", bin[i+j]);
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83 | else
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84 | fprintf (fp, " ");
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85 | }
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86 | fprintf (fp, " ");
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87 |
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88 | for (j = 0 ; j < 16 ; j++)
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89 | {
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90 | if (i+j < len)
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91 | fprintf (fp, "%c", IS_READABLE_CHAR(bin[i+j]) ? bin[i+j] : '.');
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92 | }
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93 | fprintf (fp, "\n");
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94 | }
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95 |
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96 | return CF_OK;
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97 | }
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98 |
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99 | CF_Debug_Ctx
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100 | CF_Debug_CreateCtx (void)
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101 | {
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102 | CF_DEBUG_CTX * ctx = NULL;
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103 |
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104 | ctx = (CF_DEBUG_CTX *) calloc (sizeof (CF_DEBUG_CTX), 1);
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105 |
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106 | return (CF_Debug_Ctx) ctx;
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107 | }
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108 |
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109 | int
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110 | CF_Debug_DestroyCtx (CF_Debug_Ctx ctx)
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111 | {
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112 | CF_DEBUG_CTX * context = (CF_DEBUG_CTX *) ctx;
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113 | CF_DEBUG_CALLSTACK * pop = NULL;
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114 | CF_DEBUG_CALLSTACK * next = NULL;
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115 |
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116 | CHECK_INVALID_CTX (ctx);
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117 |
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118 | if (context->fp != NULL)
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119 | fclose (context->fp);
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120 |
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121 | for (pop = next = context->callstack.caller ; pop ; pop = next)
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122 | {
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123 | next = next->caller;
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124 | free (pop);
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125 | }
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126 |
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127 | free (context);
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128 |
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129 | return CF_OK;
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130 | }
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131 |
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132 | int
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133 | CF_Debug_SetOutputFD (CF_Debug_Ctx ctx,
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134 | int fd)
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135 | {
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136 | int result = 0;
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137 | int dupfd = 0;
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138 |
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139 | CF_DEBUG_CTX * context = (CF_DEBUG_CTX *) ctx;
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140 | FILE * fp = NULL;
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141 |
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142 | CHECK_INVALID_CTX (ctx);
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143 |
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144 | TRY
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145 | {
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146 | dupfd = dup (fd);
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147 | if (dupfd < 0)
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148 | {
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149 | result = -1;
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150 | TRY_BREAK;
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151 | }
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152 |
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153 | fp = fdopen (dupfd, "a+");
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154 | if (fp == NULL)
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155 | {
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156 | close (dupfd);
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157 | result = -2;
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158 | TRY_BREAK;
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159 | }
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160 |
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161 | context->fp = fp;
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162 | }
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163 | CATCH_IF (result < 0)
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164 | {
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165 | return CF_ERROR_DEBUG_SET_OUTPUT_FD;
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166 | }
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167 |
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168 | return CF_OK;
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169 | }
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170 |
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171 | int
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172 | CF_Debug_Print (FILE * fp,
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173 | const char * file,
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174 | const char * func,
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175 | const int line,
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176 | const char * fmt, ...)
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177 | {
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178 | va_list valist;
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179 |
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180 | va_start (valist, fmt);
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181 | CF_Debug_Local_Print (fp, file, func, line, fmt, valist);
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182 | va_end (valist);
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183 |
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184 | return CF_OK;
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185 | }
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186 |
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187 | int
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188 | CF_Debug_PrintBin (FILE * fp,
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189 | const char * file,
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190 | const char * func,
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191 | const int line,
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192 | const unsigned char * bin,
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193 | const int len,
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194 | const char * fmt, ...)
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195 | {
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196 | va_list valist;
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197 |
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198 | va_start (valist, fmt);
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199 | CF_Debug_Local_Print (fp, file, func, line, fmt, valist);
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200 | va_end (valist);
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201 |
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202 | CF_Debug_Local_PrintBin (fp, file, func, line, bin, len);
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203 |
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204 | return CF_OK;
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205 | }
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206 |
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207 | int
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208 | CF_Debug_UpdateCtx (CF_Debug_Ctx ctx,
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209 | const char * file,
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210 | const char * func,
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211 | const int line)
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212 | {
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213 | CF_DEBUG_CTX * context = (CF_DEBUG_CTX *) ctx;
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214 |
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215 | CHECK_INVALID_CTX (ctx);
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216 |
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217 | strncpy (context->file, file, strlen (file));
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218 | strncpy (context->func, func, strlen (func));
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219 | context->line = line;
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220 |
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221 | return CF_OK;
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222 | }
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223 |
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224 | int
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225 | CF_Debug_Trace (CF_Debug_Ctx ctx,
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226 | const char * fmt, ...)
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227 | {
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228 | va_list valist;
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229 | CF_DEBUG_CTX * context = (CF_DEBUG_CTX *) ctx;
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230 |
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231 | CHECK_INVALID_CTX (ctx);
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232 |
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233 | va_start (valist, fmt);
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234 | CF_Debug_Local_Print (GET_CTX_OSTREAM (context),
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235 | context->file,
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236 | context->func,
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237 | context->line,
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238 | fmt, valist);
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239 | va_end (valist);
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240 |
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241 | return CF_OK;
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242 | }
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243 |
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244 | int
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245 | CF_Debug_TraceBin (CF_Debug_Ctx ctx,
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246 | const unsigned char * bin,
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247 | const int len,
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248 | const char * fmt, ...)
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249 | {
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250 | va_list valist;
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251 | CF_DEBUG_CTX * context = (CF_DEBUG_CTX *) ctx;
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252 |
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253 | CHECK_INVALID_CTX (ctx);
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254 |
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255 | va_start (valist, fmt);
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256 | CF_Debug_Local_Print (GET_CTX_OSTREAM (context),
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257 | context->file,
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258 | context->func,
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259 | context->line,
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260 | fmt, valist);
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261 | va_end (valist);
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262 |
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263 | CF_Debug_Local_PrintBin (GET_CTX_OSTREAM (context),
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264 | context->file,
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265 | context->func,
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266 | context->line,
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267 | bin, len);
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268 |
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269 | return CF_OK;
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270 | }
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271 |
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272 | int
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273 | CF_Debug_CallStackPush (CF_Debug_Ctx ctx,
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274 | const char * file,
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275 | const char * func,
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276 | const int line)
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277 | {
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278 | CF_DEBUG_CTX * context = (CF_DEBUG_CTX *) ctx;
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279 | CF_DEBUG_CALLSTACK * push = NULL;
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280 |
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281 | CHECK_INVALID_CTX (ctx);
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282 |
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283 | push = (CF_DEBUG_CALLSTACK *) calloc (sizeof (CF_DEBUG_CALLSTACK), 1);
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284 | if (push == NULL)
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285 | return CF_ERROR_DEBUG_PUSH_CALLSTACK;
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286 |
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287 | /* push to callstack */
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288 | sprintf (push->file, "%s", file);
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289 | sprintf (push->func, "%s", func);
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290 | push->line = line;
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291 | push->caller = context->callstack.caller;
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292 | context->callstack.caller = push;
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293 |
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294 | CF_Debug_UpdateCtx (ctx, file, func, line);
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295 |
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296 | return CF_OK;
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297 | }
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298 |
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299 | int
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300 | CF_Debug_CallStackPop (CF_Debug_Ctx ctx,
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301 | CF_Debug_CallStack * callstack)
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302 | {
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303 | CF_DEBUG_CTX * context = (CF_DEBUG_CTX *) ctx;
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304 | CF_DEBUG_CALLSTACK * pop = NULL;
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305 |
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306 | CHECK_INVALID_CTX (ctx);
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307 |
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308 | pop = context->callstack.caller;
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309 | if (pop == NULL)
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310 | return CF_ERROR_DEBUG_POP_CALLSTACK;
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311 |
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312 | if (callstack != NULL)
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313 | {
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314 | sprintf (callstack->file , "%s", pop->file);
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315 | sprintf (callstack->function, "%s", pop->func);
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316 | callstack->line = pop->line;
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317 | }
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318 |
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319 | memset (context->file, 0x00, sizeof (context->file));
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320 | memset (context->func, 0x00, sizeof (context->func));
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321 | context->line = 0;
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322 |
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323 | /* restore current context */
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324 | if (pop->caller != NULL)
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325 | {
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326 | CF_Debug_UpdateCtx (ctx,
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327 | pop->caller->file,
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328 | pop->caller->func,
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329 | pop->caller->line);
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330 | }
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331 |
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332 | context->callstack.caller = pop->caller;
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333 | free (pop);
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334 |
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335 | return CF_OK;
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336 | }
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