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netfilter: replace strnicmp with strncasecmp

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The kernel used to contain two functions for length-delimited,
case-insensitive string comparison, strnicmp with correct semantics and
a slightly buggy strncasecmp.  The latter is the POSIX name, so strnicmp
was renamed to strncasecmp, and strnicmp made into a wrapper for the new
strncasecmp to avoid breaking existing users.

To allow the compat wrapper strnicmp to be removed at some point in the
future, and to avoid the extra indirection cost, do
s/strnicmp/strncasecmp/g.

Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Rasmus Villemoes 2014-10-13 15:54:31 -07:00 committed by Linus Torvalds
parent 2bebf5cb4e
commit 18082746a2
5 changed files with 18 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
net/netfilter/ipvs/ip_vs_ftp.c
View File

@ -96,13 +96,13 @@ static int ip_vs_ftp_get_addrport(char *data, char *data_limit,
if (data_limit - data < plen) {
/* check if there is partial match */
if (strnicmp(data, pattern, data_limit - data) == 0)
if (strncasecmp(data, pattern, data_limit - data) == 0)
return -1;
else
return 0;
}
if (strnicmp(data, pattern, plen) != 0) {
if (strncasecmp(data, pattern, plen) != 0) {
return 0;
}
s = data + plen;
@ -354,7 +354,7 @@ static int ip_vs_ftp_in(struct ip_vs_app *app, struct ip_vs_conn *cp,
data_limit = skb_tail_pointer(skb);
while (data <= data_limit - 6) {
if (strnicmp(data, "PASV\r\n", 6) == 0) {
if (strncasecmp(data, "PASV\r\n", 6) == 0) {
/* Passive mode on */
IP_VS_DBG(7, "got PASV at %td of %td\n",
data - data_start,

4
net/netfilter/nf_conntrack_ftp.c
View File

@ -304,12 +304,12 @@ static int find_pattern(const char *data, size_t dlen,
if (dlen <= plen) {
/* Short packet: try for partial? */
if (strnicmp(data, pattern, dlen) == 0)
if (strncasecmp(data, pattern, dlen) == 0)
return -1;
else return 0;
}
if (strnicmp(data, pattern, plen) != 0) {
if (strncasecmp(data, pattern, plen) != 0) {
#if 0
size_t i;

22
net/netfilter/nf_conntrack_sip.c
View File

@ -247,7 +247,7 @@ int ct_sip_parse_request(const struct nf_conn *ct,
for (; dptr < limit - strlen("sip:"); dptr++) {
if (*dptr == '\r' || *dptr == '\n')
return -1;
if (strnicmp(dptr, "sip:", strlen("sip:")) == 0) {
if (strncasecmp(dptr, "sip:", strlen("sip:")) == 0) {
dptr += strlen("sip:");
break;
}
@ -350,7 +350,7 @@ static const char *ct_sip_header_search(const char *dptr, const char *limit,
continue;
}
if (strnicmp(dptr, needle, len) == 0)
if (strncasecmp(dptr, needle, len) == 0)
return dptr;
}
return NULL;
@ -383,10 +383,10 @@ int ct_sip_get_header(const struct nf_conn *ct, const char *dptr,
/* Find header. Compact headers must be followed by a
* non-alphabetic character to avoid mismatches. */
if (limit - dptr >= hdr->len &&
strnicmp(dptr, hdr->name, hdr->len) == 0)
strncasecmp(dptr, hdr->name, hdr->len) == 0)
dptr += hdr->len;
else if (hdr->cname && limit - dptr >= hdr->clen + 1 &&
strnicmp(dptr, hdr->cname, hdr->clen) == 0 &&
strncasecmp(dptr, hdr->cname, hdr->clen) == 0 &&
!isalpha(*(dptr + hdr->clen)))
dptr += hdr->clen;
else
@ -620,9 +620,9 @@ static int ct_sip_parse_transport(struct nf_conn *ct, const char *dptr,
if (ct_sip_parse_param(ct, dptr, dataoff, datalen, "transport=",
&matchoff, &matchlen)) {
if (!strnicmp(dptr + matchoff, "TCP", strlen("TCP")))
if (!strncasecmp(dptr + matchoff, "TCP", strlen("TCP")))
*proto = IPPROTO_TCP;
else if (!strnicmp(dptr + matchoff, "UDP", strlen("UDP")))
else if (!strncasecmp(dptr + matchoff, "UDP", strlen("UDP")))
*proto = IPPROTO_UDP;
else
return 0;
@ -743,10 +743,10 @@ int ct_sip_get_sdp_header(const struct nf_conn *ct, const char *dptr,
if (term != SDP_HDR_UNSPEC &&
limit - dptr >= thdr->len &&
strnicmp(dptr, thdr->name, thdr->len) == 0)
strncasecmp(dptr, thdr->name, thdr->len) == 0)
break;
else if (limit - dptr >= hdr->len &&
strnicmp(dptr, hdr->name, hdr->len) == 0)
strncasecmp(dptr, hdr->name, hdr->len) == 0)
dptr += hdr->len;
else
continue;
@ -1394,7 +1394,7 @@ static int process_sip_response(struct sk_buff *skb, unsigned int protoff,
if (handler->response == NULL)
continue;
if (*datalen < matchend + handler->len ||
strnicmp(*dptr + matchend, handler->method, handler->len))
strncasecmp(*dptr + matchend, handler->method, handler->len))
continue;
return handler->response(skb, protoff, dataoff, dptr, datalen,
cseq, code);
@ -1435,7 +1435,7 @@ static int process_sip_request(struct sk_buff *skb, unsigned int protoff,
if (handler->request == NULL)
continue;
if (*datalen < handler->len ||
strnicmp(*dptr, handler->method, handler->len))
strncasecmp(*dptr, handler->method, handler->len))
continue;
if (ct_sip_get_header(ct, *dptr, 0, *datalen, SIP_HDR_CSEQ,
@ -1462,7 +1462,7 @@ static int process_sip_msg(struct sk_buff *skb, struct nf_conn *ct,
const struct nf_nat_sip_hooks *hooks;
int ret;
if (strnicmp(*dptr, "SIP/2.0 ", strlen("SIP/2.0 ")) != 0)
if (strncasecmp(*dptr, "SIP/2.0 ", strlen("SIP/2.0 ")) != 0)
ret = process_sip_request(skb, protoff, dataoff, dptr, datalen);
else
ret = process_sip_response(skb, protoff, dataoff, dptr, datalen);

2
net/netfilter/nf_log.c
View File

@ -30,7 +30,7 @@ static struct nf_logger *__find_logger(int pf, const char *str_logger)
log = rcu_dereference_protected(loggers[pf][i],
lockdep_is_held(&nf_log_mutex));
if (!strnicmp(str_logger, log->name, strlen(log->name)))
if (!strncasecmp(str_logger, log->name, strlen(log->name)))
return log;
}

2
net/netfilter/nf_nat_sip.c
View File

@ -155,7 +155,7 @@ static unsigned int nf_nat_sip(struct sk_buff *skb, unsigned int protoff,
int request, in_header;
/* Basic rules: requests and responses. */
if (strnicmp(*dptr, "SIP/2.0", strlen("SIP/2.0")) != 0) {
if (strncasecmp(*dptr, "SIP/2.0", strlen("SIP/2.0")) != 0) {
if (ct_sip_parse_request(ct, *dptr, *datalen,
&matchoff, &matchlen,
&addr, &port) > 0 &&