const char *
vcc_regexp(struct vcc *tl)
{
char buf[BUFSIZ], *p;
vre_t *t;
const char *error;
int erroroffset;
struct inifin *ifp;
Expect(tl, CSTR);
if (tl->err)
return (NULL);
t = VRE_compile(tl->t->dec, 0, &error, &erroroffset);
if (t == NULL) {
VSB_printf(tl->sb,
"Regexp compilation error:\n\n%s\n\n", error);
vcc_ErrWhere(tl, tl->t);
return (NULL);
}
VRE_free(&t);
bprintf(buf, "VGC_re_%u", tl->unique++);
p = TlAlloc(tl, strlen(buf) + 1);
strcpy(p, buf);
Fh(tl, 0, "static void *%s;\n", buf);
ifp = New_IniFin(tl);
VSB_printf(ifp->ini, "\tVRT_re_init(&%s, ",buf);
EncToken(ifp->ini, tl->t);
VSB_printf(ifp->ini, ");");
VSB_printf(ifp->fin, "\t\tVRT_re_fini(%s);", buf);
vcc_NextToken(tl);
return (p);
}
static void
vxp_expr_regex(struct vxp *vxp, struct vex_rhs **prhs)
{
const char *errptr;
int erroff;
/* XXX: Caseless option */
AN(prhs);
AZ(*prhs);
if (vxp->t->tok != VAL) {
VSB_printf(vxp->sb, "Expected regular expression got '%.*s' ",
PF(vxp->t));
vxp_ErrWhere(vxp, vxp->t, -1);
return;
}
AN(vxp->t->dec);
ALLOC_OBJ(*prhs, VEX_RHS_MAGIC);
AN(*prhs);
(*prhs)->type = VEX_REGEX;
(*prhs)->val_string = strdup(vxp->t->dec);
(*prhs)->val_regex = VRE_compile(vxp->t->dec, vxp->vre_options,
&errptr, &erroff);
if ((*prhs)->val_regex == NULL) {
AN(errptr);
VSB_printf(vxp->sb, "Regular expression error: %s ", errptr);
vxp_ErrWhere(vxp, vxp->t, erroff);
return;
}
vxp_NextToken(vxp);
}
static void
cmd_http_expect(CMD_ARGS)
{
struct http *hp;
const char *lhs;
char *cmp;
const char *rhs;
vre_t *vre;
const char *error;
int erroroffset;
int i;
(void)cmd;
(void)vl;
CAST_OBJ_NOTNULL(hp, priv, HTTP_MAGIC);
assert(!strcmp(av[0], "expect"));
av++;
AN(av[0]);
AN(av[1]);
AN(av[2]);
AZ(av[3]);
lhs = cmd_var_resolve(hp, av[0]);
cmp = av[1];
rhs = cmd_var_resolve(hp, av[2]);
if (!strcmp(cmp, "==")) {
if (strcmp(lhs, rhs))
vtc_log(hp->vl, 0, "EXPECT %s (%s) %s %s (%s) failed",
av[0], lhs, av[1], av[2], rhs);
else
vtc_log(hp->vl, 4, "EXPECT %s (%s) %s %s (%s) match",
av[0], lhs, av[1], av[2], rhs);
} else if (!strcmp(cmp, "!=")) {
if (!strcmp(lhs, rhs))
vtc_log(hp->vl, 0, "EXPECT %s (%s) %s %s (%s) failed",
av[0], lhs, av[1], av[2], rhs);
else
vtc_log(hp->vl, 4, "EXPECT %s (%s) %s %s (%s) match",
av[0], lhs, av[1], av[2], rhs);
} else if (!strcmp(cmp, "~") || !strcmp(cmp, "!~")) {
vre = VRE_compile(rhs, 0, &error, &erroroffset);
if (vre == NULL)
vtc_log(hp->vl, 0, "REGEXP error: %s (@%d) (%s)",
error, erroroffset, rhs);
i = VRE_exec(vre, lhs, strlen(lhs), 0, 0, NULL, 0, 0);
if ((i >= 0 && *cmp == '~') || (i < 0 && *cmp == '!'))
vtc_log(hp->vl, 4, "EXPECT %s (%s) %s \"%s\" match",
av[0], lhs, cmp, rhs);
else
vtc_log(hp->vl, 0, "EXPECT %s (%s) %s \"%s\" failed",
av[0], lhs, cmp, rhs);
VRE_free(&vre);
} else {
vtc_log(hp->vl, 0,
"EXPECT %s (%s) %s %s (%s) test not implemented",
av[0], lhs, av[1], av[2], rhs);
}
}
static int
vsl_IX_arg(struct VSL_data *vsl, int opt, const char *arg)
{
int i, l, off;
const char *b, *e, *err;
vre_t *vre;
struct vslf *vslf;
struct vbitmap *tags = NULL;
CHECK_OBJ_NOTNULL(vsl, VSL_MAGIC);
vsl->flags |= F_SEEN_ixIX;
b = arg;
e = strchr(b, ':');
if (e) {
tags = vbit_init(SLT__MAX);
AN(tags);
l = e - b;
i = VSL_List2Tags(b, l, vsl_vbm_bitset, tags);
if (i < 0)
vbit_destroy(tags);
if (i == -1)
return (vsl_diag(vsl,
"-%c: \"%*.*s\" matches zero tags",
(char)opt, l, l, b));
else if (i == -2)
return (vsl_diag(vsl,
"-%c: \"%*.*s\" is ambiguous",
(char)opt, l, l, b));
else if (i <= -3)
return (vsl_diag(vsl,
"-%c: Syntax error in \"%*.*s\"",
(char)opt, l, l, b));
b = e + 1;
}
vre = VRE_compile(b, vsl->C_opt ? VRE_CASELESS : 0, &err, &off);
if (vre == NULL) {
if (tags)
vbit_destroy(tags);
return (vsl_diag(vsl, "-%c: Regex error at position %d (%s)\n",
(char)opt, off, err));
}
ALLOC_OBJ(vslf, VSLF_MAGIC);
AN(vslf);
vslf->tags = tags;
vslf->vre = vre;
if (opt == 'I')
VTAILQ_INSERT_TAIL(&vsl->vslf_select, vslf, list);
else {
assert(opt == 'X');
VTAILQ_INSERT_TAIL(&vsl->vslf_suppress, vslf, list);
}
return (1);
}
void
vtc_expect(struct vtclog *vl,
const char *olhs, const char *lhs,
const char *cmp,
const char *orhs, const char *rhs)
{
vre_t *vre;
const char *error;
int erroroffset;
int i, j, retval = -1;
double fl, fr;
j = lhs == NULL || rhs == NULL;
if (lhs == NULL)
lhs = "<undef>";
if (rhs == NULL)
rhs = "<undef>";
if (!strcmp(cmp, "~") || !strcmp(cmp, "!~")) {
vre = VRE_compile(rhs, 0, &error, &erroroffset);
if (vre == NULL)
vtc_fatal(vl, "REGEXP error: %s (@%d) (%s)",
error, erroroffset, rhs);
i = VRE_exec(vre, lhs, strlen(lhs), 0, 0, NULL, 0, 0);
retval = (i >= 0 && *cmp == '~') || (i < 0 && *cmp == '!');
VRE_free(&vre);
} else if (!strcmp(cmp, "==")) {
retval = strcmp(lhs, rhs) == 0;
} else if (!strcmp(cmp, "!=")) {
retval = strcmp(lhs, rhs) != 0;
} else if (j) {
// fail inequality comparisons if either side is undef'ed
retval = 0;
} else {
fl = VNUM(lhs);
fr = VNUM(rhs);
if (!strcmp(cmp, "<"))
retval = isless(fl, fr);
else if (!strcmp(cmp, ">"))
retval = isgreater(fl, fr);
else if (!strcmp(cmp, "<="))
retval = islessequal(fl, fr);
else if (!strcmp(cmp, ">="))
retval = isgreaterequal(fl, fr);
}
if (retval == -1)
vtc_fatal(vl,
"EXPECT %s (%s) %s %s (%s) test not implemented",
olhs, lhs, cmp, orhs, rhs);
else if (retval == 0)
vtc_fatal(vl, "EXPECT %s (%s) %s \"%s\" failed",
olhs, lhs, cmp, rhs);
else
vtc_log(vl, 4, "EXPECT %s (%s) %s \"%s\" match",
olhs, lhs, cmp, rhs);
}
static void *
compile_regex(const char *regex)
{
void *re;
const char *error;
int error_offset;
re = VRE_compile(regex, 0, &error, &error_offset);
return re;
}
void
VRT_re_init(void **rep, const char *re)
{
vre_t *t;
const char *error;
int erroroffset;
/* This was already check-compiled by the VCL compiler */
t = VRE_compile(re, 0, &error, &erroroffset);
AN(t);
*rep = t;
}
static int
vsl_IX_arg(struct VSL_data *vd, const char *opt, int arg)
{
vre_t **rp;
const char *error;
int erroroffset;
CHECK_OBJ_NOTNULL(vd, VSL_MAGIC);
if (arg == 'I')
rp = &vd->regincl;
else
rp = &vd->regexcl;
if (*rp != NULL) {
fprintf(stderr, "Option %c can only be given once", arg);
return (-1);
}
*rp = VRE_compile(opt, vd->regflags, &error, &erroroffset);
if (*rp == NULL) {
fprintf(stderr, "Illegal regex: %s\n", error);
return (-1);
}
return (1);
}
struct vslq_query *
vslq_newquery(struct VSL_data *vsl, enum VSL_grouping_e grouping,
const char *querystring)
{
struct vslq_query *query;
const char *error;
int pos;
vre_t *regex;
(void)grouping;
AN(querystring);
regex = VRE_compile(querystring, 0, &error, &pos);
if (regex == NULL) {
vsl_diag(vsl, "failed to compile regex at pos %d: %s",
pos, error);
return (NULL);
}
ALLOC_OBJ(query, VSLQ_QUERY_MAGIC);
if (query != NULL)
query->regex = regex;
return (query);
}
static void
cmd_http_expect(CMD_ARGS)
{
struct http *hp;
const char *lhs, *clhs;
char *cmp;
const char *rhs, *crhs;
vre_t *vre;
const char *error;
int erroroffset;
int i, retval = -1;
(void)cmd;
(void)vl;
CAST_OBJ_NOTNULL(hp, priv, HTTP_MAGIC);
AZ(strcmp(av[0], "expect"));
av++;
AN(av[0]);
AN(av[1]);
AN(av[2]);
AZ(av[3]);
lhs = cmd_var_resolve(hp, av[0]);
cmp = av[1];
rhs = cmd_var_resolve(hp, av[2]);
clhs = lhs ? lhs : "<undef>";
crhs = rhs ? rhs : "<undef>";
if (!strcmp(cmp, "~") || !strcmp(cmp, "!~")) {
vre = VRE_compile(crhs, 0, &error, &erroroffset);
if (vre == NULL)
vtc_log(hp->vl, 0, "REGEXP error: %s (@%d) (%s)",
error, erroroffset, crhs);
i = VRE_exec(vre, clhs, strlen(clhs), 0, 0, NULL, 0, 0);
retval = (i >= 0 && *cmp == '~') || (i < 0 && *cmp == '!');
VRE_free(&vre);
} else if (!strcmp(cmp, "==")) {
retval = strcmp(clhs, crhs) == 0;
} else if (!strcmp(cmp, "!=")) {
retval = strcmp(clhs, crhs) != 0;
} else if (lhs == NULL || rhs == NULL) {
// fail inequality comparisons if either side is undef'ed
retval = 0;
} else if (!strcmp(cmp, "<")) {
retval = isless(VNUM(lhs), VNUM(rhs));
} else if (!strcmp(cmp, ">")) {
retval = isgreater(VNUM(lhs), VNUM(rhs));
} else if (!strcmp(cmp, "<=")) {
retval = islessequal(VNUM(lhs), VNUM(rhs));
} else if (!strcmp(cmp, ">=")) {
retval = isgreaterequal(VNUM(lhs), VNUM(rhs));
}
if (retval == -1)
vtc_log(hp->vl, 0,
"EXPECT %s (%s) %s %s (%s) test not implemented",
av[0], clhs, av[1], av[2], crhs);
else
vtc_log(hp->vl, retval ? 4 : 0, "EXPECT %s (%s) %s \"%s\" %s",
av[0], clhs, cmp, crhs, retval ? "match" : "failed");
}
