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annotate common/strhelp.c @ 274:90432cb1f374

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Added a separator to certificate list to demonstrate how it works.
author Raimund Renkert <rrenkert@intevation.de>
date Wed, 02 Apr 2014 13:38:56 +0200
parents c596568fa45b
children c4a989a0d6cf
rev   line source
134
5f830969e4a1 Added missing include.
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diff changeset
1 #include <ctype.h>
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2 #include <stdbool.h>
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3 #include <stdio.h>
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4 #include <stdlib.h>
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5 #include <string.h>
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6 #include <assert.h>
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7
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8 #include <polarssl/base64.h>
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9
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10 #ifdef WIN32
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11 #include <windows.h>
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12 #endif
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13
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14 /* Remarks regarding the "Flawfinder: ignore" comments in this file:
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15 *
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16 * - strlen:
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17 *
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18 * It's true that strlen might crash if input is not null
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19 * terminated. But by design there is not safe way to get the
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20 * length of an string in C, and defining an additional length
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21 * parameter for string parameter will only transfere the problem to
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22 * the caller.
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23 */
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24
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25 static void
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26 out_of_core(void)
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27 {
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28 fputs("\nfatal: out of memory\n", stderr);
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29 exit(2);
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30 }
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31 void *
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32 xmalloc( size_t n )
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33 {
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34 void *p = malloc( n );
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35 if( !p )
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36 out_of_core();
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37 return p;
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38 }
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39
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40 void *
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41 xrealloc( void *a, size_t n )
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42 {
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43 void *p = realloc( a, n );
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44 if( !p )
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45 out_of_core();
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46 return p;
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47 }
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48
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49 char *
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50 xstrndup( const char *string, const size_t len )
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51 {
60
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52 char *p = xmalloc( len + 1 );
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53 memcpy( p, string, len );
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54 p[len] = '\0';
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55 return p;
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56 }
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57
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58 unsigned int
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59 strv_length (char **str_array)
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60 {
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61 unsigned int i = 0;
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62
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63 if (!str_array)
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64 return 0;
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65
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66 while (str_array[i])
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67 ++i;
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68
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69 return i;
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70 }
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71
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72 void strv_append (char ***pArray, const char *string, const size_t len)
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73 {
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74 unsigned int old_len = 0;
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75
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76 if (!*pArray) {
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77 *pArray = xmalloc(2 * sizeof(char*));
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78 (*pArray)[0] = xstrndup(string, len);
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79 (*pArray)[1] = NULL;
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80 return;
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81 }
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82 old_len = strv_length(*pArray);
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83 *pArray = xrealloc(*pArray, sizeof(char**) * (old_len + 2));
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84
60
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85 (*pArray)[old_len] = xstrndup(string, len);
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86 (*pArray)[old_len + 1] = NULL;
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87 }
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88
91
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89 void
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90 str_append_str(char **pDst, size_t *dst_len, const char *appendage, const size_t len)
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91 {
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92 if (!appendage)
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93 return;
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94
91
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95 if (!(*pDst)) {
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96 *pDst = xstrndup(appendage, len);
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97 *dst_len = len;
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98 } else {
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99 size_t new_size = (*dst_len) + len + 1;
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100 char *p_old = *pDst;
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101 *pDst = xmalloc(new_size);
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102 strncpy(*pDst, p_old, *dst_len);
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103 strncpy(*pDst + *dst_len, appendage, len);
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104 *dst_len = new_size - 1;
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105 (*pDst)[*dst_len] = '\0';
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106 free (p_old);
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107 }
59
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108 }
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109
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110 void
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111 strv_free (char **str_array)
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112 {
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113 if (str_array)
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114 {
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115 int i;
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116
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117 for (i = 0; str_array[i] != NULL; i++)
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118 free (str_array[i]);
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119
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120 free (str_array);
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121 }
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122 }
131
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123
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124 bool
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125 str_equal (char *s1, char *s2)
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126 {
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127 size_t l1 = strlen(s1); /* Flawfinder: ignore */
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128 size_t l2 = strlen(s2); /* Flawfinder: ignore */
131
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129 if ((l1 == l2) &&
136
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130 (strcmp(s1, s2) == 0))
131
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131 return true;
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132 else
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133 return false;
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134 }
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135
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136 bool
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137 str_starts_with (char *s1, char *s2)
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138 {
143
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diff changeset
139 size_t l2 = strlen(s2); /* Flawfinder: ignore */
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diff changeset
140 if (strncmp(s1, s2, l2) == 0)
131
9104b1b2e4da Added string comparison functions.
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parents: 116
diff changeset
141 return true;
9104b1b2e4da Added string comparison functions.
Sascha Wilde <wilde@intevation.de>
parents: 116
diff changeset
142 else
9104b1b2e4da Added string comparison functions.
Sascha Wilde <wilde@intevation.de>
parents: 116
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143 return false;
9104b1b2e4da Added string comparison functions.
Sascha Wilde <wilde@intevation.de>
parents: 116
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144 }
133
c719d3fdbc15 Added functrion to trim white space from string.
Sascha Wilde <wilde@intevation.de>
parents: 131
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145
c719d3fdbc15 Added functrion to trim white space from string.
Sascha Wilde <wilde@intevation.de>
parents: 131
diff changeset
146 void
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Sascha Wilde <wilde@intevation.de>
parents: 131
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147 str_trim (char **s)
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parents: 131
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148 {
c719d3fdbc15 Added functrion to trim white space from string.
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parents: 131
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149 size_t i;
135
3fb6ddd6b70d str_trim: do nothing if *s is NULL.
Sascha Wilde <wilde@intevation.de>
parents: 134
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150 if (*s != NULL)
3fb6ddd6b70d str_trim: do nothing if *s is NULL.
Sascha Wilde <wilde@intevation.de>
parents: 134
diff changeset
151 {
3fb6ddd6b70d str_trim: do nothing if *s is NULL.
Sascha Wilde <wilde@intevation.de>
parents: 134
diff changeset
152 while (isspace(**s))
3fb6ddd6b70d str_trim: do nothing if *s is NULL.
Sascha Wilde <wilde@intevation.de>
parents: 134
diff changeset
153 (*s)++;
143
b026e6d2a161 Make flawfinder (a bit more) happy.
Sascha Wilde <wilde@intevation.de>
parents: 136
diff changeset
154 i = strlen(*s); /* Flawfinder: ignore */
135
3fb6ddd6b70d str_trim: do nothing if *s is NULL.
Sascha Wilde <wilde@intevation.de>
parents: 134
diff changeset
155 while (isspace((*s)[--i]))
3fb6ddd6b70d str_trim: do nothing if *s is NULL.
Sascha Wilde <wilde@intevation.de>
parents: 134
diff changeset
156 (*s)[i] = '\0';
3fb6ddd6b70d str_trim: do nothing if *s is NULL.
Sascha Wilde <wilde@intevation.de>
parents: 134
diff changeset
157 }
133
c719d3fdbc15 Added functrion to trim white space from string.
Sascha Wilde <wilde@intevation.de>
parents: 131
diff changeset
158 }
160
bf4bfd8843bd Add memory allocating base64 decode function
Andre Heinecke <aheinecke@intevation.de>
parents: 143
diff changeset
159
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Andre Heinecke <aheinecke@intevation.de>
parents: 143
diff changeset
160 int str_base64_decode(char **dst, size_t *dst_size, char *src,
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parents: 143
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161 size_t src_size)
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parents: 143
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162 {
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parents: 143
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163 int ret = -1;
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parents: 143
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164
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parents: 143
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165 if (!dst || *dst) {
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parents: 143
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166 return -1;
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parents: 143
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167 }
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parents: 143
diff changeset
168
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parents: 143
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169 /* Check the needed size for the buffer */
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parents: 143
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170 ret = base64_decode(NULL, dst_size,
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171 (unsigned char *)src, src_size);
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172
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parents: 143
diff changeset
173 if (ret != 0 && ret != POLARSSL_ERR_BASE64_BUFFER_TOO_SMALL) {
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174 return ret;
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parents: 143
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175 }
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parents: 143
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176
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Andre Heinecke <aheinecke@intevation.de>
parents: 143
diff changeset
177 *dst = xmalloc(*dst_size);
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parents: 143
diff changeset
178 memset (*dst, 0, *dst_size);
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diff changeset
179
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parents: 143
diff changeset
180 ret = base64_decode((unsigned char *)*dst, dst_size,
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parents: 143
diff changeset
181 (unsigned char *)src, src_size);
183
4def8b263dd3 Fix str_base64_decode
Andre Heinecke <aheinecke@intevation.de>
parents: 160
diff changeset
182 if (ret) {
160
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Andre Heinecke <aheinecke@intevation.de>
parents: 143
diff changeset
183 free (*dst);
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parents: 143
diff changeset
184 *dst = NULL;
183
4def8b263dd3 Fix str_base64_decode
Andre Heinecke <aheinecke@intevation.de>
parents: 160
diff changeset
185 *dst_size = 0;
160
bf4bfd8843bd Add memory allocating base64 decode function
Andre Heinecke <aheinecke@intevation.de>
parents: 143
diff changeset
186 }
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Andre Heinecke <aheinecke@intevation.de>
parents: 143
diff changeset
187 return ret;
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Andre Heinecke <aheinecke@intevation.de>
parents: 143
diff changeset
188 }
251
c596568fa45b Add utf16 conversion functions for Windows.
Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
189
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Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
190 void
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Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
191 xfree (void *p)
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Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
192 {
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Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
193 if (p)
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Andre Heinecke <aheinecke@intevation.de>
parents: 183
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194 free (p);
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Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
195 }
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Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
196
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Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
197 #ifdef WIN32
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Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
198 /* Adapted from GPGOL rev. e512053 */
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Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
199 char *
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parents: 183
diff changeset
200 wchar_to_utf8 (const wchar_t *string, size_t len)
c596568fa45b Add utf16 conversion functions for Windows.
Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
201 {
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Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
202 int n, ilen;
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Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
203 char *result;
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Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
204
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Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
205 ilen = (int) len;
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Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
206 if (ilen < 0)
c596568fa45b Add utf16 conversion functions for Windows.
Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
207 return NULL;
c596568fa45b Add utf16 conversion functions for Windows.
Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
208
c596568fa45b Add utf16 conversion functions for Windows.
Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
209 /* Note, that CP_UTF8 is not defined in Windows versions earlier
c596568fa45b Add utf16 conversion functions for Windows.
Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
210 than NT.*/
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Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
211 n = WideCharToMultiByte (CP_UTF8, 0, string, ilen, NULL, 0, NULL, NULL);
c596568fa45b Add utf16 conversion functions for Windows.
Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
212 if (n < 0)
c596568fa45b Add utf16 conversion functions for Windows.
Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
213 return NULL;
c596568fa45b Add utf16 conversion functions for Windows.
Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
214
c596568fa45b Add utf16 conversion functions for Windows.
Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
215 result = xmalloc ((size_t)n+1);
c596568fa45b Add utf16 conversion functions for Windows.
Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
216 n = WideCharToMultiByte (CP_UTF8, 0, string, ilen, result, n, NULL, NULL);
c596568fa45b Add utf16 conversion functions for Windows.
Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
217 if (n < 0)
c596568fa45b Add utf16 conversion functions for Windows.
Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
218 {
c596568fa45b Add utf16 conversion functions for Windows.
Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
219 xfree (result);
c596568fa45b Add utf16 conversion functions for Windows.
Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
220 return NULL;
c596568fa45b Add utf16 conversion functions for Windows.
Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
221 }
c596568fa45b Add utf16 conversion functions for Windows.
Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
222 return result;
c596568fa45b Add utf16 conversion functions for Windows.
Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
223 }
c596568fa45b Add utf16 conversion functions for Windows.
Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
224
c596568fa45b Add utf16 conversion functions for Windows.
Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
225 /* Adapted from GPGOL rev. e512053 */
c596568fa45b Add utf16 conversion functions for Windows.
Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
226 wchar_t *
c596568fa45b Add utf16 conversion functions for Windows.
Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
227 utf8_to_wchar (const char *string, size_t len)
c596568fa45b Add utf16 conversion functions for Windows.
Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
228 {
c596568fa45b Add utf16 conversion functions for Windows.
Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
229 int n, ilen;
c596568fa45b Add utf16 conversion functions for Windows.
Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
230 wchar_t *result;
c596568fa45b Add utf16 conversion functions for Windows.
Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
231
c596568fa45b Add utf16 conversion functions for Windows.
Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
232 ilen = (int) len;
c596568fa45b Add utf16 conversion functions for Windows.
Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
233 if (ilen < 0)
c596568fa45b Add utf16 conversion functions for Windows.
Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
234 return NULL;
c596568fa45b Add utf16 conversion functions for Windows.
Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
235
c596568fa45b Add utf16 conversion functions for Windows.
Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
236 n = MultiByteToWideChar (CP_UTF8, 0, string, ilen, NULL, 0);
c596568fa45b Add utf16 conversion functions for Windows.
Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
237 if (n < 0 || n + 1 < 0)
c596568fa45b Add utf16 conversion functions for Windows.
Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
238 return NULL;
c596568fa45b Add utf16 conversion functions for Windows.
Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
239
c596568fa45b Add utf16 conversion functions for Windows.
Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
240 result = xmalloc ((size_t)(n+1) * sizeof *result);
c596568fa45b Add utf16 conversion functions for Windows.
Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
241 n = MultiByteToWideChar (CP_UTF8, 0, string, ilen, result, n);
c596568fa45b Add utf16 conversion functions for Windows.
Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
242 if (n < 0)
c596568fa45b Add utf16 conversion functions for Windows.
Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
243 {
c596568fa45b Add utf16 conversion functions for Windows.
Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
244 xfree (result);
c596568fa45b Add utf16 conversion functions for Windows.
Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
245 return NULL;
c596568fa45b Add utf16 conversion functions for Windows.
Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
246 }
c596568fa45b Add utf16 conversion functions for Windows.
Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
247 result[n] = 0;
c596568fa45b Add utf16 conversion functions for Windows.
Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
248 return result;
c596568fa45b Add utf16 conversion functions for Windows.
Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
249 }
c596568fa45b Add utf16 conversion functions for Windows.
Andre Heinecke <aheinecke@intevation.de>
parents: 183
diff changeset
250 #endif
http://wald.intevation.org/projects/trustbridge/