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author | delphij <delphij@FreeBSD.org> | 2015-07-15 19:21:26 +0000 |
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committer | delphij <delphij@FreeBSD.org> | 2015-07-15 19:21:26 +0000 |
commit | 2a25cee78ab1d37e7d2bc40ae675646974d99f56 (patch) | |
tree | b0302ac4be59e104f4e1e54014561a1389397192 /contrib/ntp/libntp/hextoint.c | |
parent | a0741a75537b2e0514472ac3b28afc55a7846c30 (diff) | |
download | FreeBSD-src-2a25cee78ab1d37e7d2bc40ae675646974d99f56.zip FreeBSD-src-2a25cee78ab1d37e7d2bc40ae675646974d99f56.tar.gz |
MFC r280849,280915-280916,281015-281016,282097,282408,282415,283542,
284864,285169-285170,285435:
ntp 4.2.8p3.
Relnotes: yes
Approved by: re (?)
Diffstat (limited to 'contrib/ntp/libntp/hextoint.c')
-rw-r--r-- | contrib/ntp/libntp/hextoint.c | 27 |
1 files changed, 15 insertions, 12 deletions
diff --git a/contrib/ntp/libntp/hextoint.c b/contrib/ntp/libntp/hextoint.c index 0d774eb..980a43f 100644 --- a/contrib/ntp/libntp/hextoint.c +++ b/contrib/ntp/libntp/hextoint.c @@ -2,6 +2,7 @@ * hextoint - convert an ascii string in hex to an unsigned * long, with error checking */ +#include <config.h> #include <ctype.h> #include "ntp_stdlib.h" @@ -9,7 +10,7 @@ int hextoint( const char *str, - u_long *ival + u_long *pu ) { register u_long u; @@ -18,22 +19,24 @@ hextoint( cp = str; if (*cp == '\0') - return 0; + return 0; u = 0; while (*cp != '\0') { - if (!isxdigit((int)*cp)) - return 0; - if (u >= 0x10000000) - return 0; /* overflow */ + if (!isxdigit((unsigned char)*cp)) + return 0; + if (u & 0xF0000000) + return 0; /* overflow */ u <<= 4; - if (*cp <= '9') /* very ascii dependent */ - u += *cp++ - '0'; - else if (*cp >= 'a') - u += *cp++ - 'a' + 10; + if ('0' <= *cp && *cp <= '9') + u += *cp++ - '0'; + else if ('a' <= *cp && *cp <= 'f') + u += *cp++ - 'a' + 10; + else if ('A' <= *cp && *cp <= 'F') + u += *cp++ - 'A' + 10; else - u += *cp++ - 'A' + 10; + return 0; } - *ival = u; + *pu = u; return 1; } |