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author | Simon Rettberg | 2014-03-15 01:49:50 +0100 |
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committer | Simon Rettberg | 2014-03-15 01:49:50 +0100 |
commit | bedd2e7ccb1595c23e159eaa952ae1b0b5a3d2ad (patch) | |
tree | c7d1995a09f6ed0c4e6873252e957d72f5d07d07 /scan_asn1rawoid.c | |
download | ldadp-bedd2e7ccb1595c23e159eaa952ae1b0b5a3d2ad.tar.gz ldadp-bedd2e7ccb1595c23e159eaa952ae1b0b5a3d2ad.tar.xz ldadp-bedd2e7ccb1595c23e159eaa952ae1b0b5a3d2ad.zip |
Lean and mean initial commit
Not much functionality yet
Diffstat (limited to 'scan_asn1rawoid.c')
-rw-r--r-- | scan_asn1rawoid.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/scan_asn1rawoid.c b/scan_asn1rawoid.c new file mode 100644 index 0000000..814009d --- /dev/null +++ b/scan_asn1rawoid.c @@ -0,0 +1,40 @@ +#include "asn1.h" + +size_t scan_asn1rawoid(const char* src,const char* max,size_t* array,size_t* arraylen) { + const char* orig=src; + size_t cur=0,al; + if (!arraylen) return 0; + al=*arraylen; *arraylen=0; + if (max-src<1) return 0; /* there has to be at least one octet */ + + { + int a,b; + a=(unsigned char)*src; + b=a%40; + a/=40; + /* a can be 0, 1 or 2. And b is <=39 if a is 0 or 1. + * So, if a is bigger than 2, it is really 2 */ + if (a>2) { + b+=(a-2)*40; + a=2; + } + if (array && cur<al) array[cur]=a; ++cur; + if (array && cur<al) array[cur]=b; ++cur; + } + + for (++src; src<max; ) { + size_t i; + unsigned long tmp; + if (!(i=scan_asn1tagint(src,max,&tmp))) + return 0; + src+=i; + if (array && cur<al) array[cur]=tmp; ++cur; + } + + /* if we got this far, then we have an OID, but it might not have fit */ + *arraylen=cur; + if (cur>al) /* did not fit */ + return 0; + return src-orig; +} + |