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path: root/src/lib/libcrypto/asn1/a_utf8.c
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Diffstat (limited to 'src/lib/libcrypto/asn1/a_utf8.c')
-rw-r--r--src/lib/libcrypto/asn1/a_utf8.c162
1 files changed, 145 insertions, 17 deletions
diff --git a/src/lib/libcrypto/asn1/a_utf8.c b/src/lib/libcrypto/asn1/a_utf8.c
index 4a8a92e9e4..508e11e527 100644
--- a/src/lib/libcrypto/asn1/a_utf8.c
+++ b/src/lib/libcrypto/asn1/a_utf8.c
@@ -60,24 +60,152 @@
60#include "cryptlib.h" 60#include "cryptlib.h"
61#include <openssl/asn1.h> 61#include <openssl/asn1.h>
62 62
63int i2d_ASN1_UTF8STRING(ASN1_UTF8STRING *a, unsigned char **pp)
64 {
65 return(i2d_ASN1_bytes((ASN1_STRING *)a,pp,
66 V_ASN1_UTF8STRING,V_ASN1_UNIVERSAL));
67 }
68 63
69ASN1_UTF8STRING *d2i_ASN1_UTF8STRING(ASN1_UTF8STRING **a, unsigned char **pp, 64/* UTF8 utilities */
70 long length) 65
71 { 66/* This parses a UTF8 string one character at a time. It is passed a pointer
72 ASN1_UTF8STRING *ret=NULL; 67 * to the string and the length of the string. It sets 'value' to the value of
68 * the current character. It returns the number of characters read or a
69 * negative error code:
70 * -1 = string too short
71 * -2 = illegal character
72 * -3 = subsequent characters not of the form 10xxxxxx
73 * -4 = character encoded incorrectly (not minimal length).
74 */
75
76int UTF8_getc(const unsigned char *str, int len, unsigned long *val)
77{
78 const unsigned char *p;
79 unsigned long value;
80 int ret;
81 if(len <= 0) return 0;
82 p = str;
73 83
74 ret=(ASN1_UTF8STRING *)d2i_ASN1_bytes((ASN1_STRING **)a, 84 /* Check syntax and work out the encoded value (if correct) */
75 pp,length,V_ASN1_UTF8STRING,V_ASN1_UNIVERSAL); 85 if((*p & 0x80) == 0) {
76 if (ret == NULL) 86 value = *p++ & 0x7f;
77 { 87 ret = 1;
78 ASN1err(ASN1_F_D2I_ASN1_UTF8STRING,ERR_R_NESTED_ASN1_ERROR); 88 } else if((*p & 0xe0) == 0xc0) {
79 return(NULL); 89 if(len < 2) return -1;
90 if((p[1] & 0xc0) != 0x80) return -3;
91 value = (*p++ & 0x1f) << 6;
92 value |= *p++ & 0x3f;
93 if(value < 0x80) return -4;
94 ret = 2;
95 } else if((*p & 0xf0) == 0xe0) {
96 if(len < 3) return -1;
97 if( ((p[1] & 0xc0) != 0x80)
98 || ((p[2] & 0xc0) != 0x80) ) return -3;
99 value = (*p++ & 0xf) << 12;
100 value |= (*p++ & 0x3f) << 6;
101 value |= *p++ & 0x3f;
102 if(value < 0x800) return -4;
103 ret = 3;
104 } else if((*p & 0xf8) == 0xf0) {
105 if(len < 4) return -1;
106 if( ((p[1] & 0xc0) != 0x80)
107 || ((p[2] & 0xc0) != 0x80)
108 || ((p[3] & 0xc0) != 0x80) ) return -3;
109 value = ((unsigned long)(*p++ & 0x7)) << 18;
110 value |= (*p++ & 0x3f) << 12;
111 value |= (*p++ & 0x3f) << 6;
112 value |= *p++ & 0x3f;
113 if(value < 0x10000) return -4;
114 ret = 4;
115 } else if((*p & 0xfc) == 0xf8) {
116 if(len < 5) return -1;
117 if( ((p[1] & 0xc0) != 0x80)
118 || ((p[2] & 0xc0) != 0x80)
119 || ((p[3] & 0xc0) != 0x80)
120 || ((p[4] & 0xc0) != 0x80) ) return -3;
121 value = ((unsigned long)(*p++ & 0x3)) << 24;
122 value |= ((unsigned long)(*p++ & 0x3f)) << 18;
123 value |= ((unsigned long)(*p++ & 0x3f)) << 12;
124 value |= (*p++ & 0x3f) << 6;
125 value |= *p++ & 0x3f;
126 if(value < 0x200000) return -4;
127 ret = 5;
128 } else if((*p & 0xfe) == 0xfc) {
129 if(len < 6) return -1;
130 if( ((p[1] & 0xc0) != 0x80)
131 || ((p[2] & 0xc0) != 0x80)
132 || ((p[3] & 0xc0) != 0x80)
133 || ((p[4] & 0xc0) != 0x80)
134 || ((p[5] & 0xc0) != 0x80) ) return -3;
135 value = ((unsigned long)(*p++ & 0x1)) << 30;
136 value |= ((unsigned long)(*p++ & 0x3f)) << 24;
137 value |= ((unsigned long)(*p++ & 0x3f)) << 18;
138 value |= ((unsigned long)(*p++ & 0x3f)) << 12;
139 value |= (*p++ & 0x3f) << 6;
140 value |= *p++ & 0x3f;
141 if(value < 0x4000000) return -4;
142 ret = 6;
143 } else return -2;
144 *val = value;
145 return ret;
146}
147
148/* This takes a character 'value' and writes the UTF8 encoded value in
149 * 'str' where 'str' is a buffer containing 'len' characters. Returns
150 * the number of characters written or -1 if 'len' is too small. 'str' can
151 * be set to NULL in which case it just returns the number of characters.
152 * It will need at most 6 characters.
153 */
154
155int UTF8_putc(unsigned char *str, int len, unsigned long value)
156{
157 if(!str) len = 6; /* Maximum we will need */
158 else if(len <= 0) return -1;
159 if(value < 0x80) {
160 if(str) *str = (unsigned char)value;
161 return 1;
162 }
163 if(value < 0x800) {
164 if(len < 2) return -1;
165 if(str) {
166 *str++ = (unsigned char)(((value >> 6) & 0x1f) | 0xc0);
167 *str = (unsigned char)((value & 0x3f) | 0x80);
80 } 168 }
81 return(ret); 169 return 2;
82 } 170 }
83 171 if(value < 0x10000) {
172 if(len < 3) return -1;
173 if(str) {
174 *str++ = (unsigned char)(((value >> 12) & 0xf) | 0xe0);
175 *str++ = (unsigned char)(((value >> 6) & 0x3f) | 0x80);
176 *str = (unsigned char)((value & 0x3f) | 0x80);
177 }
178 return 3;
179 }
180 if(value < 0x200000) {
181 if(len < 4) return -1;
182 if(str) {
183 *str++ = (unsigned char)(((value >> 18) & 0x7) | 0xf0);
184 *str++ = (unsigned char)(((value >> 12) & 0x3f) | 0x80);
185 *str++ = (unsigned char)(((value >> 6) & 0x3f) | 0x80);
186 *str = (unsigned char)((value & 0x3f) | 0x80);
187 }
188 return 4;
189 }
190 if(value < 0x4000000) {
191 if(len < 5) return -1;
192 if(str) {
193 *str++ = (unsigned char)(((value >> 24) & 0x3) | 0xf8);
194 *str++ = (unsigned char)(((value >> 18) & 0x3f) | 0x80);
195 *str++ = (unsigned char)(((value >> 12) & 0x3f) | 0x80);
196 *str++ = (unsigned char)(((value >> 6) & 0x3f) | 0x80);
197 *str = (unsigned char)((value & 0x3f) | 0x80);
198 }
199 return 5;
200 }
201 if(len < 6) return -1;
202 if(str) {
203 *str++ = (unsigned char)(((value >> 30) & 0x1) | 0xfc);
204 *str++ = (unsigned char)(((value >> 24) & 0x3f) | 0x80);
205 *str++ = (unsigned char)(((value >> 18) & 0x3f) | 0x80);
206 *str++ = (unsigned char)(((value >> 12) & 0x3f) | 0x80);
207 *str++ = (unsigned char)(((value >> 6) & 0x3f) | 0x80);
208 *str = (unsigned char)((value & 0x3f) | 0x80);
209 }
210 return 6;
211}
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