40 lines
1.1 KiB
C
40 lines
1.1 KiB
C
#include "asn1.h"
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size_t scan_asn1string(const char* src,const char* max,
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enum asn1_tagclass* tc,enum asn1_tagtype* tt,unsigned long* tag,
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const char** s,size_t* l) {
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size_t len,tmp;
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if (!(len=scan_asn1tag(src,max,tc,tt,tag)))
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return 0;
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if (!(tmp=scan_asn1length(src+len,max,l)))
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return 0;
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len+=tmp;
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*s=src+len;
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return len+*l;
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}
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#ifdef UNITTEST
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#include <string.h>
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#include <assert.h>
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#undef UNITTEST
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#include "scan_asn1tag.c"
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#include "scan_asn1tagint.c"
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#include "scan_asn1length.c"
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int main() {
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char buf[100];
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enum asn1_tagclass tc;
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enum asn1_tagtype tt;
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unsigned long tag;
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const char* s;
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size_t l;
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strcpy(buf,"\x16\x05""fnord");
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assert(scan_asn1string(buf,buf+7,&tc,&tt,&tag,&s,&l)==7 && tc==UNIVERSAL && tt==PRIMITIVE && tag==IA5String && s==buf+2 && l==5);
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assert(scan_asn1string(buf,buf,&tc,&tt,&tag,&s,&l)==0); // not enough input, first return 0
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assert(scan_asn1string(buf,buf+6,&tc,&tt,&tag,&s,&l)==0); // not enough input, second return 0
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// we only care for 100% coverage of this file, the others have their own unit tests */
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return 0;
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}
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#endif
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