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