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#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <stdint.h>
#include <buffer.h>
#include <errmsg.h>
size_t hash(const char* word) {
size_t x;
for (x=0; *word; ++word)
x = (x + (x << 5)) ^ *word;
return x;
}
#define HASHTABSIZE 65536
struct node {
char* word,* ip,* port,* timestamp;
struct node* next;
}* hashtab[HASHTABSIZE];
void* allocassert(void* x) {
if (!x) {
#ifdef oldandslow
fprintf(stderr,"out of memory!\n");
exit(1);
#else
die(1,"out of memory");
#endif
}
return x;
}
struct node** lookup(char* word) {
struct node** x;
for (x=&hashtab[hash(word)%HASHTABSIZE]; *x; x=&(*x)->next)
if (!strcmp(word,(*x)->word))
break;
return x;
}
char printfbuf[16*1024];
static int cmp3(const char* a, const char* b) {
#if defined(__i386__) || defined(__x86_64__)
return a[0]==b[0] && a[1]==b[1] && a[2]==b[2];
#else
return ((*(uint32_t*)a ^ *(uint32_t*)b) & 0xffffff) == 0;
#endif
}
static int cmp4(const char* a, const char* b) {
#if defined(__i386__) || defined(__x86_64__)
return *(uint32_t*)a == *(uint32_t*)b;
#else
return cmp3(a,b) && a[3]==b[3];
#endif
}
#ifndef oldandslow
static unsigned char inbuf[16*1024];
static size_t ib_first,ib_last;
static int mygetc() {
if (ib_first>=ib_last) {
ib_first=0;
ib_last=read(0,inbuf,sizeof inbuf);
if (ib_last==(size_t)-1) return -1;
if (ib_last==0) return -2;
}
return inbuf[ib_first++];
}
static size_t myfgets(char* buf,size_t bufsize) {
static int eof;
int i;
size_t j;
if (eof) return 0;
for (j=0; j<bufsize-1; ++j) {
i=mygetc();
if (i==-2) { eof=1; return j; }
if (i==-1) return -1;
if (i=='\n') break;
buf[j]=i;
}
buf[j]=0;
return j;
}
#endif
int main() {
char line[8192];
char* dat;
char* timestamp;
#ifdef oldandslow
setvbuf(stdout,printfbuf,_IOFBF,sizeof printfbuf);
while (fgets(line,sizeof(line),stdin)) {
int tslen;
/* chomp */
{
int i;
for (i=0; i<sizeof(line) && line[i]; ++i)
if (line[i]=='\n') break;
line[i]=0;
}
#else
buffer_init(buffer_1,write,1,printfbuf,sizeof printfbuf);
while (myfgets(line,sizeof(line))+1>1) {
int tslen;
#endif
/* find out what kind of time stamp there is */
tslen=0;
if (line[0]=='@') {
/* multilog timestamp */
char* x=strchr(line,' ');
if (x) {
tslen=x-line;
if (tslen!=25) tslen=0;
}
} else if (isdigit(line[0])) {
char* x=strchr(line,' ');
if (x && x==line+10) {
x=strchr(x+1,' ');
if (x && x==line+29) tslen=29;
}
}
if (tslen) {
dat=line+tslen+1;
line[tslen]=0;
timestamp=line;
} else {
dat=line;
timestamp="";
}
/* element two is the unique key */
{
char* fields[21];
char* x=dat;
int i;
/* early-out skip the field splitting if we are not interested in
* the line anyway */
if (*x != 'a' && *x != 'c' && *x != 'G' && *x != 'P' && *x != 'H')
continue;
/* split into fields */
for (i=0; i<20; ++i) {
char* y=strchr(x,' ');
if (!y) break;
*y=0;
fields[i]=x;
x=y+1;
}
fields[i]=x; ++i;
if (!strcmp(fields[0],"accept")) {
struct node** N;
struct node* x;
if (i<2) continue;
N=lookup(fields[1]);
if (!(x=*N)) {
*N=malloc(sizeof(**N));
(*N)->next=0;
x=*N;
} else {
free(x->word);
#ifdef oldandslow
free(x->ip);
free(x->port);
free(x->timestamp);
#endif
}
#ifndef oldandslow
/* reduce allocations */
x->word=allocassert(malloc((fields[4]-fields[1])+(fields[0]-line)));
memcpy(x->word,fields[1],fields[4]-fields[1]);
x->ip=x->word+(fields[2]-fields[1]);
x->port=x->ip+(fields[3]-fields[2]);
x->timestamp=x->port+(fields[4]-fields[3]);
memcpy(x->timestamp,line,fields[0]-line);
#else
x->word=allocassert(strdup(fields[1]));
x->ip=allocassert(strdup(fields[2]));
x->port=allocassert(strdup(fields[3]));
x->timestamp=allocassert(strdup(line));
#endif
} else if (!strncmp(fields[0],"close/",6)) {
struct node** N;
N=lookup(fields[1]);
if (*N) {
struct node* y=(*N)->next;
struct node* x=*N;
free(x->word);
#ifdef oldandslow
free(x->ip);
free(x->port);
free(x->timestamp);
#endif
free(x);
*N=y;
}
} else if (cmp3(fields[0],"GET") || cmp4(fields[0],"POST") || cmp4(fields[0],"HEAD")) {
if (i>6) { /* otherwise it's a format violation and we ignore the line */
struct node** N;
N=lookup(fields[1]);
#ifdef oldandslow
printf("%s %s %s http%s://%s%s %s %s %s\n",
timestamp,fields[0],*N?(*N)->ip:"::",
strstr(fields[0],"SSL")?"s":"",fields[6],fields[2],fields[3],fields[4],fields[5]);
#else
buffer_putm(buffer_1,timestamp," ",fields[0]," ",*N?(*N)->ip:"::"," http",
strstr(fields[0],"SSL")?"s":"","://",fields[6],fields[2]," ",
fields[3]," ",fields[4]," ",fields[5],"\n");
#endif
}
}
}
}
#ifndef oldandslow
buffer_flush(buffer_1);
#endif
return 0;
}
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