rpm/rpmio/macro.c

2043 lines
47 KiB
C

/** \ingroup rpmrc rpmio
* \file rpmio/macro.c
*/
#include "system.h"
#include <stdarg.h>
#if !defined(isblank)
#define isblank(_c) ((_c) == ' ' || (_c) == '\t')
#endif
#define iseol(_c) ((_c) == '\n' || (_c) == '\r')
#define STREQ(_t, _f, _fn) ((_fn) == (sizeof(_t)-1) && !strncmp((_t), (_f), (_fn)))
#ifdef DEBUG_MACROS
#include <sys/types.h>
#include <errno.h>
#include <fcntl.h>
#include <getopt.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define rpmError fprintf
#define RPMERR_BADSPEC stderr
#undef _
#define _(x) x
#define vmefail() (exit(1), NULL)
#define urlPath(_xr, _r) *(_r) = (_xr)
typedef FILE * FD_t;
#define Fopen(_path, _fmode) fopen(_path, "r");
#define Ferror ferror
#define Fstrerror(_fd) strerror(errno)
#define Fread fread
#define Fclose fclose
#define fdGetFILE(_fd) (_fd)
#else
#include <rpmio_internal.h>
#include <rpmmessages.h>
#include <rpmerr.h>
#endif
#include <rpmmacro.h>
#include "debug.h"
/*@access FD_t@*/ /* XXX compared with NULL */
/*@access MacroContext@*/
/*@access MacroEntry@*/
static struct MacroContext_s rpmGlobalMacroContext_s;
/*@-compmempass@*/
MacroContext rpmGlobalMacroContext = &rpmGlobalMacroContext_s;
/*@=compmempass@*/
static struct MacroContext_s rpmCLIMacroContext_s;
/*@-compmempass@*/
MacroContext rpmCLIMacroContext = &rpmCLIMacroContext_s;
/*@=compmempass@*/
/**
* Macro expansion state.
*/
typedef /*@abstract@*/ struct MacroBuf_s {
/*@shared@*/ const char * s; /*!< Text to expand. */
/*@shared@*/ char * t; /*!< Expansion buffer. */
size_t nb; /*!< No. bytes remaining in expansion buffer. */
int depth; /*!< Current expansion depth. */
int macro_trace; /*!< Pre-print macro to expand? */
int expand_trace; /*!< Post-print macro expansion? */
/*@shared@*/ /*@null@*/ void * spec; /*!< (future) %file expansion info?. */
/*@dependent@*/ MacroContext mc;
} * MacroBuf;
#define SAVECHAR(_mb, _c) { *(_mb)->t = (_c), (_mb)->t++, (_mb)->nb--; }
/*@-exportlocal -exportheadervar@*/
#define MAX_MACRO_DEPTH 16
/*@unchecked@*/
int max_macro_depth = MAX_MACRO_DEPTH;
#ifdef DEBUG_MACROS
/*@unchecked@*/
int print_macro_trace = 0;
/*@unchecked@*/
int print_expand_trace = 0;
#else
/*@unchecked@*/
int print_macro_trace = 0;
/*@unchecked@*/
int print_expand_trace = 0;
#endif
/*@=exportlocal =exportheadervar@*/
#define MACRO_CHUNK_SIZE 16
/* forward ref */
static int expandMacro(MacroBuf mb)
/*@globals rpmGlobalMacroContext,
print_macro_trace, print_expand_trace,
fileSystem @*/
/*@modifies mb, rpmGlobalMacroContext,
print_macro_trace, print_expand_trace,
fileSystem @*/;
/**
* Wrapper to free(3), hides const compilation noise, permit NULL, return NULL.
* @param p memory to free
* @retval NULL always
*/
/*@unused@*/ static inline /*@null@*/ void *
_free(/*@only@*/ /*@null@*/ const void * p)
/*@modifies p@*/
{
if (p != NULL) free((void *)p);
return NULL;
}
/* =============================================================== */
/**
* Compare macro entries by name (qsort/bsearch).
* @param ap 1st macro entry
* @param bp 2nd macro entry
* @return result of comparison
*/
static int
compareMacroName(const void * ap, const void * bp)
/*@*/
{
MacroEntry ame = *((MacroEntry *)ap);
MacroEntry bme = *((MacroEntry *)bp);
if (ame == NULL && bme == NULL)
return 0;
if (ame == NULL)
return 1;
if (bme == NULL)
return -1;
return strcmp(ame->name, bme->name);
}
/**
* Enlarge macro table.
* @param mc macro context
*/
static void
expandMacroTable(MacroContext mc)
/*@modifies mc @*/
{
if (mc->macroTable == NULL) {
mc->macrosAllocated = MACRO_CHUNK_SIZE;
mc->macroTable = (MacroEntry *)
xmalloc(sizeof(*(mc->macroTable)) * mc->macrosAllocated);
mc->firstFree = 0;
} else {
mc->macrosAllocated += MACRO_CHUNK_SIZE;
mc->macroTable = (MacroEntry *)
xrealloc(mc->macroTable, sizeof(*(mc->macroTable)) *
mc->macrosAllocated);
}
memset(&mc->macroTable[mc->firstFree], 0, MACRO_CHUNK_SIZE * sizeof(*(mc->macroTable)));
}
/**
* Sort entries in macro table.
* @param mc macro context
*/
static void
sortMacroTable(MacroContext mc)
/*@modifies mc @*/
{
int i;
if (mc == NULL || mc->macroTable == NULL)
return;
qsort(mc->macroTable, mc->firstFree, sizeof(*(mc->macroTable)),
compareMacroName);
/* Empty pointers are now at end of table. Reset first free index. */
for (i = 0; i < mc->firstFree; i++) {
if (mc->macroTable[i] != NULL)
continue;
mc->firstFree = i;
break;
}
}
void
rpmDumpMacroTable(MacroContext mc, FILE * fp)
{
int nempty = 0;
int nactive = 0;
if (mc == NULL) mc = rpmGlobalMacroContext;
if (fp == NULL) fp = stderr;
fprintf(fp, "========================\n");
if (mc->macroTable != NULL) {
int i;
for (i = 0; i < mc->firstFree; i++) {
MacroEntry me;
if ((me = mc->macroTable[i]) == NULL) {
/* XXX this should never happen */
nempty++;
continue;
}
fprintf(fp, "%3d%c %s", me->level,
(me->used > 0 ? '=' : ':'), me->name);
if (me->opts && *me->opts)
fprintf(fp, "(%s)", me->opts);
if (me->body && *me->body)
fprintf(fp, "\t%s", me->body);
fprintf(fp, "\n");
nactive++;
}
}
fprintf(fp, _("======================== active %d empty %d\n"),
nactive, nempty);
}
/**
* Find entry in macro table.
* @param mc macro context
* @param name macro name
* @param namelen no. of byes
* @return address of slot in macro table with name (or NULL)
*/
/*@-mustmod@*/ /* LCL: segfault with modifies nothing annotation */
/*@dependent@*/ /*@null@*/ static MacroEntry *
findEntry(MacroContext mc, const char * name, size_t namelen)
/*@globals rpmGlobalMacroContext @*/
/*@modifies rpmGlobalMacroContext @*/
{
MacroEntry key, *ret;
struct MacroEntry_s keybuf;
char namebuf[1024];
if (mc == NULL) mc = rpmGlobalMacroContext;
if (mc->macroTable == NULL || mc->firstFree == 0)
return NULL;
/*@-branchstate@*/
if (namelen > 0) {
strncpy(namebuf, name, namelen);
namebuf[namelen] = '\0';
name = namebuf;
}
/*@=branchstate@*/
key = &keybuf;
memset(key, 0, sizeof(*key));
/*@-temptrans -assignexpose@*/
key->name = (char *)name;
/*@=temptrans =assignexpose@*/
ret = (MacroEntry *) bsearch(&key, mc->macroTable, mc->firstFree,
sizeof(*(mc->macroTable)), compareMacroName);
/* XXX TODO: find 1st empty slot and return that */
return ret;
}
/*@=mustmod@*/
/* =============================================================== */
/**
* fgets(3) analogue that reads \ continuations. Last newline always trimmed.
*/
/*@dependent@*/ static char *
rdcl(char * buf, size_t size, FD_t fd, int escapes)
/*@globals fileSystem @*/
/*@modifies buf, fileSystem @*/
{
char *q = buf;
size_t nb = 0;
size_t nread = 0;
FILE * f = fdGetFILE(fd);
*q = '\0';
if (f != NULL)
do {
/* read next line */
if (fgets(q, size, f) == NULL)
break;
nb = strlen(q);
nread += nb;
for (q += nb - 1; nb > 0 && iseol(*q); q--)
nb--;
if (!(nb > 0 && *q == '\\')) { /* continue? */
*(++q) = '\0'; /* trim trailing \r, \n */
break;
}
if (escapes) { /* copy escape too */
q++;
nb++;
}
size -= nb;
if (*q == '\r') /* XXX avoid \r madness */
*q = '\n';
*(++q) = '\0'; /* next char in buf */
} while (size > 0);
/*@-retalias@*/ return (nread > 0 ? buf : NULL); /*@=retalias@*/
}
/**
* Return text between pl and matching pr characters.
* @param p start of text
* @param pl left char, i.e. '[', '(', '{', etc.
* @param pr right char, i.e. ']', ')', '}', etc.
* @return address of last char before pr (or NULL)
*/
static const char *
matchchar(const char * p, char pl, char pr)
/*@*/
{
int lvl = 0;
char c;
while ((c = *p++) != '\0') {
if (c == '\\') { /* Ignore escaped chars */
p++;
continue;
}
if (c == pr) {
if (--lvl <= 0) return --p;
} else if (c == pl)
lvl++;
}
return (const char *)NULL;
}
/**
* Pre-print macro expression to be expanded.
* @param mb macro expansion state
* @param s current expansion string
* @param se end of string
*/
static void
printMacro(MacroBuf mb, const char * s, const char * se)
/*@globals fileSystem @*/
/*@modifies fileSystem @*/
{
const char *senl;
const char *ellipsis;
int choplen;
if (s >= se) { /* XXX just in case */
fprintf(stderr, _("%3d>%*s(empty)"), mb->depth,
(2 * mb->depth + 1), "");
return;
}
if (s[-1] == '{')
s--;
/* Print only to first end-of-line (or end-of-string). */
for (senl = se; *senl && !iseol(*senl); senl++)
{};
/* Limit trailing non-trace output */
choplen = 61 - (2 * mb->depth);
if ((senl - s) > choplen) {
senl = s + choplen;
ellipsis = "...";
} else
ellipsis = "";
/* Substitute caret at end-of-macro position */
fprintf(stderr, "%3d>%*s%%%.*s^", mb->depth,
(2 * mb->depth + 1), "", (int)(se - s), s);
if (se[1] != '\0' && (senl - (se+1)) > 0)
fprintf(stderr, "%-.*s%s", (int)(senl - (se+1)), se+1, ellipsis);
fprintf(stderr, "\n");
}
/**
* Post-print expanded macro expression.
* @param mb macro expansion state
* @param t current expansion string result
* @param te end of string
*/
static void
printExpansion(MacroBuf mb, const char * t, const char * te)
/*@globals fileSystem @*/
/*@modifies fileSystem @*/
{
const char *ellipsis;
int choplen;
if (!(te > t)) {
fprintf(stderr, _("%3d<%*s(empty)\n"), mb->depth, (2 * mb->depth + 1), "");
return;
}
/* Shorten output which contains newlines */
while (te > t && iseol(te[-1]))
te--;
ellipsis = "";
if (mb->depth > 0) {
const char *tenl;
/* Skip to last line of expansion */
while ((tenl = strchr(t, '\n')) && tenl < te)
t = ++tenl;
/* Limit expand output */
choplen = 61 - (2 * mb->depth);
if ((te - t) > choplen) {
te = t + choplen;
ellipsis = "...";
}
}
fprintf(stderr, "%3d<%*s", mb->depth, (2 * mb->depth + 1), "");
if (te > t)
fprintf(stderr, "%.*s%s", (int)(te - t), t, ellipsis);
fprintf(stderr, "\n");
}
#define SKIPBLANK(_s, _c) \
while (((_c) = *(_s)) && isblank(_c)) \
(_s)++;
#define SKIPNONBLANK(_s, _c) \
while (((_c) = *(_s)) && !(isblank(_c) || iseol(_c))) \
(_s)++;
#define COPYNAME(_ne, _s, _c) \
{ SKIPBLANK(_s,_c); \
while(((_c) = *(_s)) && (xisalnum(_c) || (_c) == '_')) \
*(_ne)++ = *(_s)++; \
*(_ne) = '\0'; \
}
#define COPYOPTS(_oe, _s, _c) \
{ while(((_c) = *(_s)) && (_c) != ')') \
*(_oe)++ = *(_s)++; \
*(_oe) = '\0'; \
}
#define COPYBODY(_be, _s, _c) \
{ while(((_c) = *(_s)) && !iseol(_c)) { \
if ((_c) == '\\') \
(_s)++; \
*(_be)++ = *(_s)++; \
} \
*(_be) = '\0'; \
}
/**
* Save source and expand field into target.
* @param mb macro expansion state
* @param f field
* @param flen no. bytes in field
* @return result of expansion
*/
static int
expandT(MacroBuf mb, const char * f, size_t flen)
/*@globals rpmGlobalMacroContext,
fileSystem@*/
/*@modifies mb, rpmGlobalMacroContext, fileSystem @*/
{
char *sbuf;
const char *s = mb->s;
int rc;
sbuf = alloca(flen + 1);
memset(sbuf, 0, (flen + 1));
strncpy(sbuf, f, flen);
sbuf[flen] = '\0';
mb->s = sbuf;
rc = expandMacro(mb);
mb->s = s;
return rc;
}
#if 0
/**
* Save target and expand sbuf into target.
* @param mb macro expansion state
* @param tbuf target buffer
* @param tbuflen no. bytes in target buffer
* @return result of expansion
*/
static int
expandS(MacroBuf mb, char * tbuf, size_t tbuflen)
/*@globals rpmGlobalMacroContext,
fileSystem@*/
/*@modifies mb, *tbuf, rpmGlobalMacroContext, fileSystem @*/
{
const char *t = mb->t;
size_t nb = mb->nb;
int rc;
mb->t = tbuf;
mb->nb = tbuflen;
rc = expandMacro(mb);
mb->t = t;
mb->nb = nb;
return rc;
}
#endif
/**
* Save source/target and expand macro in u.
* @param mb macro expansion state
* @param u input macro, output expansion
* @param ulen no. bytes in u buffer
* @return result of expansion
*/
static int
expandU(MacroBuf mb, char * u, size_t ulen)
/*@globals rpmGlobalMacroContext,
fileSystem@*/
/*@modifies mb, *u, rpmGlobalMacroContext, fileSystem @*/
{
const char *s = mb->s;
char *t = mb->t;
size_t nb = mb->nb;
char *tbuf;
int rc;
tbuf = alloca(ulen + 1);
memset(tbuf, 0, (ulen + 1));
/*@-temptrans -assignexpose@*/
mb->s = u;
/*@=temptrans =assignexpose@*/
mb->t = tbuf;
mb->nb = ulen;
rc = expandMacro(mb);
tbuf[ulen] = '\0'; /* XXX just in case */
if (ulen > mb->nb)
strncpy(u, tbuf, (ulen - mb->nb + 1));
mb->s = s;
mb->t = t;
mb->nb = nb;
return rc;
}
/**
* Expand output of shell command into target buffer.
* @param mb macro expansion state
* @param cmd shell command
* @param clen no. bytes in shell command
* @return result of expansion
*/
static int
doShellEscape(MacroBuf mb, const char * cmd, size_t clen)
/*@globals rpmGlobalMacroContext,
fileSystem @*/
/*@modifies mb, rpmGlobalMacroContext,
fileSystem @*/
{
char pcmd[BUFSIZ];
FILE *shf;
int rc;
int c;
strncpy(pcmd, cmd, clen);
pcmd[clen] = '\0';
rc = expandU(mb, pcmd, sizeof(pcmd));
if (rc)
return rc;
if ((shf = popen(pcmd, "r")) == NULL)
return 1;
while(mb->nb > 0 && (c = fgetc(shf)) != EOF)
SAVECHAR(mb, c);
(void) pclose(shf);
/* XXX delete trailing \r \n */
while (iseol(mb->t[-1])) {
*(mb->t--) = '\0';
mb->nb++;
}
return 0;
}
/**
* Parse (and execute) new macro definition.
* @param mb macro expansion state
* @param se macro definition to parse
* @param level macro recursion level
* @param expandbody should body be expanded?
* @return address to continue parsing
*/
/*@dependent@*/ static const char *
doDefine(MacroBuf mb, const char * se, int level, int expandbody)
/*@globals rpmGlobalMacroContext @*/
/*@modifies mb, rpmGlobalMacroContext @*/
{
const char *s = se;
char buf[BUFSIZ], *n = buf, *ne = n;
char *o = NULL, *oe;
char *b, *be;
int c;
int oc = ')';
/* Copy name */
/*@-globs@*/
COPYNAME(ne, s, c);
/*@=globs@*/
/* Copy opts (if present) */
oe = ne + 1;
if (*s == '(') {
s++; /* skip ( */
o = oe;
COPYOPTS(oe, s, oc);
s++; /* skip ) */
}
/* Copy body, skipping over escaped newlines */
b = be = oe + 1;
/*@-globs@*/
SKIPBLANK(s, c);
/*@=globs@*/
if (c == '{') { /* XXX permit silent {...} grouping */
if ((se = matchchar(s, c, '}')) == NULL) {
rpmError(RPMERR_BADSPEC,
_("Macro %%%s has unterminated body\n"), n);
se = s; /* XXX W2DO? */
/*@-retalias@*/ return se; /*@=retalias@*/
}
s++; /* XXX skip { */
strncpy(b, s, (se - s));
b[se - s] = '\0';
be += strlen(b);
se++; /* XXX skip } */
s = se; /* move scan forward */
} else { /* otherwise free-field */
COPYBODY(be, s, c);
/* Trim trailing blanks/newlines */
/*@-globs@*/
while (--be >= b && (c = *be) && (isblank(c) || iseol(c)))
{};
/*@=globs@*/
*(++be) = '\0'; /* one too far */
}
/* Move scan over body */
while (iseol(*s))
s++;
se = s;
/* Names must start with alphabetic or _ and be at least 3 chars */
if (!((c = *n) && (xisalpha(c) || c == '_') && (ne - n) > 2)) {
rpmError(RPMERR_BADSPEC,
_("Macro %%%s has illegal name (%%define)\n"), n);
/*@-retalias@*/ return se; /*@=retalias@*/
}
/* Options must be terminated with ')' */
if (o && oc != ')') {
rpmError(RPMERR_BADSPEC, _("Macro %%%s has unterminated opts\n"), n);
/*@-retalias@*/ return se; /*@=retalias@*/
}
if ((be - b) < 1) {
rpmError(RPMERR_BADSPEC, _("Macro %%%s has empty body\n"), n);
/*@-retalias@*/ return se; /*@=retalias@*/
}
/*@-modfilesys@*/
if (expandbody && expandU(mb, b, (&buf[sizeof(buf)] - b))) {
rpmError(RPMERR_BADSPEC, _("Macro %%%s failed to expand\n"), n);
/*@-retalias@*/ return se; /*@=retalias@*/
}
/*@=modfilesys@*/
addMacro(mb->mc, n, o, b, (level - 1));
/*@-retalias@*/ return se; /*@=retalias@*/
}
/**
* Parse (and execute) macro undefinition.
* @param mc macro context
* @param se macro name to undefine
* @return address to continue parsing
*/
/*@dependent@*/ static const char *
doUndefine(MacroContext mc, const char * se)
/*@globals rpmGlobalMacroContext @*/
/*@modifies mc, rpmGlobalMacroContext @*/
{
const char *s = se;
char buf[BUFSIZ], *n = buf, *ne = n;
int c;
/*@-globs@*/
COPYNAME(ne, s, c);
/*@=globs@*/
/* Move scan over body */
while (iseol(*s))
s++;
se = s;
/* Names must start with alphabetic or _ and be at least 3 chars */
if (!((c = *n) && (xisalpha(c) || c == '_') && (ne - n) > 2)) {
rpmError(RPMERR_BADSPEC,
_("Macro %%%s has illegal name (%%undefine)\n"), n);
/*@-retalias@*/ return se; /*@=retalias@*/
}
delMacro(mc, n);
/*@-retalias@*/ return se; /*@=retalias@*/
}
#ifdef DYING
static void
dumpME(const char * msg, MacroEntry me)
/*@globals fileSystem @*/
/*@modifies fileSystem @*/
{
if (msg)
fprintf(stderr, "%s", msg);
fprintf(stderr, "\tme %p", me);
if (me)
fprintf(stderr,"\tname %p(%s) prev %p",
me->name, me->name, me->prev);
fprintf(stderr, "\n");
}
#endif
/**
* Push new macro definition onto macro entry stack.
* @param mep address of macro entry slot
* @param n macro name
* @param o macro parameters (NULL if none)
* @param b macro body (NULL becomes "")
* @param level macro recursion level
*/
static void
pushMacro(/*@out@*/ MacroEntry * mep,
const char * n, /*@null@*/ const char * o,
/*@null@*/ const char * b, int level)
/*@modifies *mep @*/
{
/*@-usedef@*/
MacroEntry prev = (mep && *mep ? *mep : NULL);
/*@=usedef@*/
MacroEntry me = (MacroEntry) xmalloc(sizeof(*me));
/*@-assignexpose@*/
me->prev = prev;
/*@=assignexpose@*/
me->name = (prev ? prev->name : xstrdup(n));
me->opts = (o ? xstrdup(o) : NULL);
me->body = xstrdup(b ? b : "");
me->used = 0;
me->level = level;
/*@-branchstate@*/
if (mep)
*mep = me;
else
me = _free(me);
/*@=branchstate@*/
}
/**
* Pop macro definition from macro entry stack.
* @param mep address of macro entry slot
*/
static void
popMacro(MacroEntry * mep)
/*@modifies *mep @*/
{
MacroEntry me = (*mep ? *mep : NULL);
/*@-branchstate@*/
if (me) {
/* XXX cast to workaround const */
/*@-onlytrans@*/
if ((*mep = me->prev) == NULL)
me->name = _free(me->name);
me->opts = _free(me->opts);
me->body = _free(me->body);
me = _free(me);
/*@=onlytrans@*/
}
/*@=branchstate@*/
}
/**
* Free parsed arguments for parameterized macro.
* @param mb macro expansion state
*/
static void
freeArgs(MacroBuf mb)
/*@modifies mb @*/
{
MacroContext mc = mb->mc;
int ndeleted = 0;
int i;
if (mc == NULL || mc->macroTable == NULL)
return;
/* Delete dynamic macro definitions */
for (i = 0; i < mc->firstFree; i++) {
MacroEntry *mep, me;
int skiptest = 0;
mep = &mc->macroTable[i];
me = *mep;
if (me == NULL) /* XXX this should never happen */
continue;
if (me->level < mb->depth)
continue;
if (strlen(me->name) == 1 && strchr("#*0", *me->name)) {
if (*me->name == '*' && me->used > 0)
skiptest = 1; /* XXX skip test for %# %* %0 */
} else if (!skiptest && me->used <= 0) {
#if NOTYET
rpmError(RPMERR_BADSPEC,
_("Macro %%%s (%s) was not used below level %d\n"),
me->name, me->body, me->level);
#endif
}
popMacro(mep);
if (!(mep && *mep))
ndeleted++;
}
/* If any deleted macros, sort macro table */
if (ndeleted)
sortMacroTable(mc);
}
/**
* Parse arguments (to next new line) for parameterized macro.
* @todo Use popt rather than getopt to parse args.
* @param mb macro expansion state
* @param me macro entry slot
* @param se arguments to parse
* @param lastc stop parsing at lastc
* @return address to continue parsing
*/
/*@dependent@*/ static const char *
grabArgs(MacroBuf mb, const MacroEntry me, const char * se, char lastc)
/*@globals rpmGlobalMacroContext @*/
/*@modifies mb, rpmGlobalMacroContext @*/
{
char buf[BUFSIZ], *b, *be;
char aname[16];
const char *opts, *o;
int argc = 0;
const char **argv;
int c;
/* Copy macro name as argv[0], save beginning of args. */
buf[0] = '\0';
b = be = stpcpy(buf, me->name);
addMacro(mb->mc, "0", NULL, buf, mb->depth);
argc = 1; /* XXX count argv[0] */
/* Copy args into buf until lastc */
*be++ = ' ';
while ((c = *se++) != '\0' && c != lastc) {
/*@-globs@*/
if (!isblank(c)) {
*be++ = c;
continue;
}
/*@=globs@*/
/* c is blank */
if (be[-1] == ' ')
continue;
/* a word has ended */
*be++ = ' ';
argc++;
}
if (c == '\0') se--; /* one too far */
if (be[-1] != ' ')
argc++, be++; /* last word has not trailing ' ' */
be[-1] = '\0';
if (*b == ' ') b++; /* skip the leading ' ' */
/*
* The macro %* analoguous to the shell's $* means "Pass all non-macro
* parameters." Consequently, there needs to be a macro that means "Pass all
* (including macro parameters) options". This is useful for verifying
* parameters during expansion and yet transparently passing all parameters
* through for higher level processing (e.g. %description and/or %setup).
* This is the (potential) justification for %{**} ...
*/
/* Add unexpanded args as macro */
addMacro(mb->mc, "**", NULL, b, mb->depth);
#ifdef NOTYET
/* XXX if macros can be passed as args ... */
expandU(mb, buf, sizeof(buf));
#endif
/* Build argv array */
argv = (const char **) alloca((argc + 1) * sizeof(*argv));
be[-1] = ' '; /* assert((be - 1) == (b + strlen(b) == buf + strlen(buf))) */
be[0] = '\0';
b = buf;
for (c = 0; c < argc; c++) {
argv[c] = b;
b = strchr(b, ' ');
*b++ = '\0';
}
/* assert(b == be); */
argv[argc] = NULL;
/* Citation from glibc/posix/getopt.c:
* Index in ARGV of the next element to be scanned.
* This is used for communication to and from the caller
* and for communication between successive calls to `getopt'.
*
* On entry to `getopt', zero means this is the first call; initialize.
*
* When `getopt' returns -1, this is the index of the first of the
* non-option elements that the caller should itself scan.
*
* Otherwise, `optind' communicates from one call to the next
* how much of ARGV has been scanned so far.
*/
/* 1003.2 says this must be 1 before any call. */
#ifdef __GLIBC__
/*@-mods@*/
optind = 1;
/*@=mods@*/
#endif
opts = me->opts;
/* Define option macros. */
while((c = getopt(argc, (char **)argv, opts)) != -1) {
if (c == '?' || (o = strchr(opts, c)) == NULL) {
rpmError(RPMERR_BADSPEC, _("Unknown option %c in %s(%s)\n"),
(char)c, me->name, opts);
/*@-retalias@*/ return se; /*@=retalias@*/
}
*be++ = '-';
*be++ = c;
/*@-usedef@*/
if (o[1] == ':') {
/*@=usedef@*/
*be++ = ' ';
be = stpcpy(be, optarg);
}
*be++ = '\0';
aname[0] = '-'; aname[1] = c; aname[2] = '\0';
addMacro(mb->mc, aname, NULL, b, mb->depth);
if (o[1] == ':') {
aname[0] = '-'; aname[1] = c; aname[2] = '*'; aname[3] = '\0';
addMacro(mb->mc, aname, NULL, optarg, mb->depth);
}
be = b; /* reuse the space */
}
/* Add arg count as macro. */
sprintf(aname, "%d", (argc - optind));
addMacro(mb->mc, "#", NULL, aname, mb->depth);
/* Add macro for each arg. Concatenate args for %*. */
if (be) {
*be = '\0';
for (c = optind; c < argc; c++) {
sprintf(aname, "%d", (c - optind + 1));
addMacro(mb->mc, aname, NULL, argv[c], mb->depth);
*be++ = ' ';
be = stpcpy(be, argv[c]);
}
}
/* Add unexpanded args as macro. */
addMacro(mb->mc, "*", NULL, b, mb->depth);
/*@-retalias@*/ return se; /*@=retalias@*/
}
/**
* Perform macro message output
* @param mb macro expansion state
* @param waserror use rpmError()?
* @param msg message to ouput
* @param msglen no. of bytes in message
*/
static void
doOutput(MacroBuf mb, int waserror, const char * msg, size_t msglen)
/*@globals rpmGlobalMacroContext,
fileSystem @*/
/*@modifies mb, rpmGlobalMacroContext,
fileSystem @*/
{
char buf[BUFSIZ];
strncpy(buf, msg, msglen);
buf[msglen] = '\0';
(void) expandU(mb, buf, sizeof(buf));
if (waserror)
rpmError(RPMERR_BADSPEC, "%s\n", buf);
else
fprintf(stderr, "%s", buf);
}
/**
* Execute macro primitives.
* @param mb macro expansion state
* @param negate should logic be inverted?
* @param f beginning of field f
* @param fn length of field f
* @param g beginning of field g
* @param gn length of field g
*/
static void
doFoo(MacroBuf mb, int negate, const char * f, size_t fn,
const char * g, size_t gn)
/*@globals rpmGlobalMacroContext,
fileSystem, internalState @*/
/*@modifies mb, rpmGlobalMacroContext,
fileSystem, internalState @*/
{
char buf[BUFSIZ], *b = NULL, *be;
int c;
buf[0] = '\0';
if (g) {
strncpy(buf, g, gn);
buf[gn] = '\0';
(void) expandU(mb, buf, sizeof(buf));
}
if (STREQ("basename", f, fn)) {
if ((b = strrchr(buf, '/')) == NULL)
b = buf;
#if NOTYET
/* XXX watchout for conflict with %dir */
} else if (STREQ("dirname", f, fn)) {
if ((b = strrchr(buf, '/')) != NULL)
*b = '\0';
b = buf;
#endif
} else if (STREQ("suffix", f, fn)) {
if ((b = strrchr(buf, '.')) != NULL)
b++;
} else if (STREQ("expand", f, fn)) {
b = buf;
} else if (STREQ("verbose", f, fn)) {
if (negate)
b = (rpmIsVerbose() ? NULL : buf);
else
b = (rpmIsVerbose() ? buf : NULL);
} else if (STREQ("url2path", f, fn) || STREQ("u2p", f, fn)) {
(void)urlPath(buf, (const char **)&b);
/*@-branchstate@*/
if (*b == '\0') b = "/";
/*@=branchstate@*/
} else if (STREQ("uncompress", f, fn)) {
rpmCompressedMagic compressed = COMPRESSED_OTHER;
/*@-globs@*/
for (b = buf; (c = *b) && isblank(c);)
b++;
for (be = b; (c = *be) && !isblank(c);)
be++;
/*@=globs@*/
*be++ = '\0';
#ifndef DEBUG_MACROS
(void) isCompressed(b, &compressed);
#endif
switch(compressed) {
default:
case 0: /* COMPRESSED_NOT */
sprintf(be, "%%_cat %s", b);
break;
case 1: /* COMPRESSED_OTHER */
sprintf(be, "%%_gzip -dc %s", b);
break;
case 2: /* COMPRESSED_BZIP2 */
sprintf(be, "%%_bzip2 %s", b);
break;
case 3: /* COMPRESSED_ZIP */
sprintf(be, "%%_unzip %s", b);
break;
}
b = be;
} else if (STREQ("S", f, fn)) {
for (b = buf; (c = *b) && xisdigit(c);)
b++;
if (!c) { /* digit index */
b++;
sprintf(b, "%%SOURCE%s", buf);
} else
b = buf;
} else if (STREQ("P", f, fn)) {
for (b = buf; (c = *b) && xisdigit(c);)
b++;
if (!c) { /* digit index */
b++;
sprintf(b, "%%PATCH%s", buf);
} else
b = buf;
} else if (STREQ("F", f, fn)) {
b = buf + strlen(buf) + 1;
sprintf(b, "file%s.file", buf);
}
if (b) {
(void) expandT(mb, b, strlen(b));
}
}
/**
* The main macro recursion loop.
* @todo Dynamically reallocate target buffer.
* @param mb macro expansion state
* @return 0 on success, 1 on failure
*/
static int
expandMacro(MacroBuf mb)
/*@globals rpmGlobalMacroContext,
print_macro_trace, print_expand_trace,
fileSystem @*/
/*@modifies mb, rpmGlobalMacroContext,
print_macro_trace, print_expand_trace,
fileSystem @*/
{
MacroEntry *mep;
MacroEntry me;
const char *s = mb->s, *se;
const char *f, *fe;
const char *g, *ge;
size_t fn, gn;
char *t = mb->t; /* save expansion pointer for printExpand */
int c;
int rc = 0;
int negate;
char grab;
int chkexist;
if (++mb->depth > max_macro_depth) {
rpmError(RPMERR_BADSPEC,
_("Recursion depth(%d) greater than max(%d)\n"),
mb->depth, max_macro_depth);
mb->depth--;
mb->expand_trace = 1;
return 1;
}
/*@-branchstate@*/
while (rc == 0 && mb->nb > 0 && (c = *s) != '\0') {
s++;
/* Copy text until next macro */
switch(c) {
case '%':
if (*s != '%')
/*@switchbreak@*/ break;
s++; /* skip first % in %% */
/*@fallthrough@*/
default:
SAVECHAR(mb, c);
continue;
/*@notreached@*/ /*@switchbreak@*/ break;
}
/* Expand next macro */
f = fe = NULL;
g = ge = NULL;
if (mb->depth > 1) /* XXX full expansion for outermost level */
t = mb->t; /* save expansion pointer for printExpand */
negate = 0;
grab = '\0';
chkexist = 0;
switch ((c = *s)) {
default: /* %name substitution */
while (strchr("!?", *s) != NULL) {
switch(*s++) {
case '!':
negate = ((negate + 1) % 2);
/*@switchbreak@*/ break;
case '?':
chkexist++;
/*@switchbreak@*/ break;
}
}
f = se = s;
if (*se == '-')
se++;
while((c = *se) && (xisalnum(c) || c == '_'))
se++;
/* Recognize non-alnum macros too */
switch (*se) {
case '*':
se++;
if (*se == '*') se++;
/*@innerbreak@*/ break;
case '#':
se++;
/*@innerbreak@*/ break;
default:
/*@innerbreak@*/ break;
}
fe = se;
/* For "%name " macros ... */
/*@-globs@*/
if ((c = *fe) && isblank(c))
grab = '\n';
/*@=globs@*/
/*@switchbreak@*/ break;
case '(': /* %(...) shell escape */
if ((se = matchchar(s, c, ')')) == NULL) {
rpmError(RPMERR_BADSPEC,
_("Unterminated %c: %s\n"), (char)c, s);
rc = 1;
continue;
}
if (mb->macro_trace)
printMacro(mb, s, se+1);
s++; /* skip ( */
rc = doShellEscape(mb, s, (se - s));
se++; /* skip ) */
s = se;
continue;
/*@notreached@*/ /*@switchbreak@*/ break;
case '{': /* %{...}/%{...:...} substitution */
if ((se = matchchar(s, c, '}')) == NULL) {
rpmError(RPMERR_BADSPEC,
_("Unterminated %c: %s\n"), (char)c, s);
rc = 1;
continue;
}
f = s+1;/* skip { */
se++; /* skip } */
while (strchr("!?", *f) != NULL) {
switch(*f++) {
case '!':
negate = ((negate + 1) % 2);
/*@switchbreak@*/ break;
case '?':
chkexist++;
/*@switchbreak@*/ break;
}
}
for (fe = f; (c = *fe) && !strchr(" :}", c);)
fe++;
switch (c) {
case ':':
g = fe + 1;
ge = se - 1;
/*@innerbreak@*/ break;
case ' ':
grab = se[-1];
/*@innerbreak@*/ break;
default:
/*@innerbreak@*/ break;
}
/*@switchbreak@*/ break;
}
/* XXX Everything below expects fe > f */
fn = (fe - f);
gn = (ge - g);
if ((fe - f) <= 0) {
/* XXX Process % in unknown context */
c = '%'; /* XXX only need to save % */
SAVECHAR(mb, c);
#if 0
rpmError(RPMERR_BADSPEC,
_("A %% is followed by an unparseable macro\n"));
#endif
s = se;
continue;
}
if (mb->macro_trace)
printMacro(mb, s, se);
/* Expand builtin macros */
if (STREQ("global", f, fn)) {
s = doDefine(mb, se, RMIL_GLOBAL, 1);
continue;
}
if (STREQ("define", f, fn)) {
s = doDefine(mb, se, mb->depth, 0);
continue;
}
if (STREQ("undefine", f, fn)) {
s = doUndefine(mb->mc, se);
continue;
}
if (STREQ("echo", f, fn) ||
STREQ("warn", f, fn) ||
STREQ("error", f, fn)) {
int waserror = 0;
if (STREQ("error", f, fn))
waserror = 1;
if (g < ge)
doOutput(mb, waserror, g, gn);
else
doOutput(mb, waserror, f, fn);
s = se;
continue;
}
if (STREQ("trace", f, fn)) {
/* XXX TODO restore expand_trace/macro_trace to 0 on return */
mb->expand_trace = mb->macro_trace = (negate ? 0 : mb->depth);
if (mb->depth == 1) {
print_macro_trace = mb->macro_trace;
print_expand_trace = mb->expand_trace;
}
s = se;
continue;
}
if (STREQ("dump", f, fn)) {
rpmDumpMacroTable(mb->mc, NULL);
while (iseol(*se))
se++;
s = se;
continue;
}
/* XXX necessary but clunky */
if (STREQ("basename", f, fn) ||
STREQ("suffix", f, fn) ||
STREQ("expand", f, fn) ||
STREQ("verbose", f, fn) ||
STREQ("uncompress", f, fn) ||
STREQ("url2path", f, fn) ||
STREQ("u2p", f, fn) ||
STREQ("S", f, fn) ||
STREQ("P", f, fn) ||
STREQ("F", f, fn)) {
/*@-internalglobs@*/ /* FIX: verbose may be set */
doFoo(mb, negate, f, fn, g, gn);
/*@=internalglobs@*/
s = se;
continue;
}
/* Expand defined macros */
mep = findEntry(mb->mc, f, fn);
me = (mep ? *mep : NULL);
/* XXX Special processing for flags */
if (*f == '-') {
if (me)
me->used++; /* Mark macro as used */
if ((me == NULL && !negate) || /* Without -f, skip %{-f...} */
(me != NULL && negate)) { /* With -f, skip %{!-f...} */
s = se;
continue;
}
if (g && g < ge) { /* Expand X in %{-f:X} */
rc = expandT(mb, g, gn);
} else
if (me && me->body && *me->body) {/* Expand %{-f}/%{-f*} */
rc = expandT(mb, me->body, strlen(me->body));
}
s = se;
continue;
}
/* XXX Special processing for macro existence */
if (chkexist) {
if ((me == NULL && !negate) || /* Without -f, skip %{?f...} */
(me != NULL && negate)) { /* With -f, skip %{!?f...} */
s = se;
continue;
}
if (g && g < ge) { /* Expand X in %{?f:X} */
rc = expandT(mb, g, gn);
} else
if (me && me->body && *me->body) { /* Expand %{?f}/%{?f*} */
rc = expandT(mb, me->body, strlen(me->body));
}
s = se;
continue;
}
if (me == NULL) { /* leave unknown %... as is */
#ifndef HACK
#if DEAD
/* XXX hack to skip over empty arg list */
if (fn == 1 && *f == '*') {
s = se;
continue;
}
#endif
/* XXX hack to permit non-overloaded %foo to be passed */
c = '%'; /* XXX only need to save % */
SAVECHAR(mb, c);
#else
rpmError(RPMERR_BADSPEC,
_("Macro %%%.*s not found, skipping\n"), fn, f);
s = se;
#endif
continue;
}
/* Setup args for "%name " macros with opts */
if (me && me->opts != NULL) {
if (grab != '\0') {
se = grabArgs(mb, me, fe, grab);
} else {
addMacro(mb->mc, "**", NULL, "", mb->depth);
addMacro(mb->mc, "*", NULL, "", mb->depth);
addMacro(mb->mc, "#", NULL, "0", mb->depth);
addMacro(mb->mc, "0", NULL, me->name, mb->depth);
}
}
/* Recursively expand body of macro */
if (me->body && *me->body) {
/*@-onlytrans@*/
mb->s = me->body;
/*@=onlytrans@*/
rc = expandMacro(mb);
if (rc == 0)
me->used++; /* Mark macro as used */
}
/* Free args for "%name " macros with opts */
if (me->opts != NULL)
freeArgs(mb);
s = se;
}
/*@=branchstate@*/
*mb->t = '\0';
mb->s = s;
mb->depth--;
if (rc != 0 || mb->expand_trace)
printExpansion(mb, t, mb->t);
return rc;
}
/* =============================================================== */
int
expandMacros(void * spec, MacroContext mc, char * sbuf, size_t slen)
{
MacroBuf mb = alloca(sizeof(*mb));
char *tbuf;
int rc;
if (sbuf == NULL || slen == 0)
return 0;
if (mc == NULL) mc = rpmGlobalMacroContext;
tbuf = alloca(slen + 1);
memset(tbuf, 0, (slen + 1));
/*@-temptrans -assignexpose@*/
mb->s = sbuf;
/*@=temptrans =assignexpose@*/
mb->t = tbuf;
mb->nb = slen;
mb->depth = 0;
mb->macro_trace = print_macro_trace;
mb->expand_trace = print_expand_trace;
/*@-temptrans -assignexpose@*/
mb->spec = spec; /* (future) %file expansion info */
mb->mc = mc;
/*@=temptrans =assignexpose@*/
rc = expandMacro(mb);
if (mb->nb == 0)
rpmError(RPMERR_BADSPEC, _("Target buffer overflow\n"));
tbuf[slen] = '\0'; /* XXX just in case */
strncpy(sbuf, tbuf, (slen - mb->nb + 1));
return rc;
}
void
addMacro(MacroContext mc,
const char * n, const char * o, const char * b, int level)
{
MacroEntry * mep;
if (mc == NULL) mc = rpmGlobalMacroContext;
/* If new name, expand macro table */
if ((mep = findEntry(mc, n, 0)) == NULL) {
if (mc->firstFree == mc->macrosAllocated)
expandMacroTable(mc);
if (mc->macroTable != NULL)
mep = mc->macroTable + mc->firstFree++;
}
if (mep != NULL) {
/* Push macro over previous definition */
pushMacro(mep, n, o, b, level);
/* If new name, sort macro table */
if ((*mep)->prev == NULL)
sortMacroTable(mc);
}
}
void
delMacro(MacroContext mc, const char * n)
{
MacroEntry * mep;
if (mc == NULL) mc = rpmGlobalMacroContext;
/* If name exists, pop entry */
if ((mep = findEntry(mc, n, 0)) != NULL) {
popMacro(mep);
/* If deleted name, sort macro table */
if (!(mep && *mep))
sortMacroTable(mc);
}
}
/*@-mustmod@*/ /* LCL: mc is modified through mb->mc, mb is abstract */
int
rpmDefineMacro(MacroContext mc, const char * macro, int level)
{
MacroBuf mb = alloca(sizeof(*mb));
memset(mb, 0, sizeof(*mb));
/* XXX just enough to get by */
/*@-temptrans -assignexpose@*/
mb->mc = (mc ? mc : rpmGlobalMacroContext);
/*@=temptrans =assignexpose@*/
(void) doDefine(mb, macro, level, 0);
return 0;
}
/*@=mustmod@*/
void
rpmLoadMacros(MacroContext mc, int level)
{
if (mc == NULL || mc == rpmGlobalMacroContext)
return;
if (mc->macroTable != NULL) {
int i;
for (i = 0; i < mc->firstFree; i++) {
MacroEntry *mep, me;
mep = &mc->macroTable[i];
me = *mep;
if (me == NULL) /* XXX this should never happen */
continue;
addMacro(NULL, me->name, me->opts, me->body, (level - 1));
}
}
}
void
rpmInitMacros(/*@unused@*/ MacroContext mc, const char *macrofiles)
{
char *m, *mfile, *me;
if (macrofiles == NULL)
return;
#ifdef DYING
if (mc == NULL) mc = rpmGlobalMacroContext;
#endif
for (mfile = m = xstrdup(macrofiles); mfile && *mfile != '\0'; mfile = me) {
FD_t fd;
char buf[BUFSIZ];
for (me = mfile; (me = strchr(me, ':')) != NULL; me++) {
if (!(me[1] == '/' && me[2] == '/'))
/*@innerbreak@*/ break;
}
if (me && *me == ':')
*me++ = '\0';
else
me = mfile + strlen(mfile);
/* Expand ~/ to $HOME */
buf[0] = '\0';
if (mfile[0] == '~' && mfile[1] == '/') {
char *home;
if ((home = getenv("HOME")) != NULL) {
mfile += 2;
strncpy(buf, home, sizeof(buf));
strncat(buf, "/", sizeof(buf) - strlen(buf));
}
}
strncat(buf, mfile, sizeof(buf) - strlen(buf));
buf[sizeof(buf)-1] = '\0';
fd = Fopen(buf, "r.fpio");
if (fd == NULL || Ferror(fd)) {
if (fd) (void) Fclose(fd);
continue;
}
/* XXX Assume new fangled macro expansion */
/*@-mods@*/
max_macro_depth = 16;
/*@=mods@*/
while(rdcl(buf, sizeof(buf), fd, 1) != NULL) {
char c, *n;
n = buf;
/*@-globs@*/
SKIPBLANK(n, c);
/*@=globs@*/
if (c != '%')
/*@innercontinue@*/ continue;
n++; /* skip % */
(void) rpmDefineMacro(NULL, n, RMIL_MACROFILES);
}
(void) Fclose(fd);
}
m = _free(m);
/* Reload cmdline macros */
/*@-mods@*/
rpmLoadMacros(rpmCLIMacroContext, RMIL_CMDLINE);
/*@=mods@*/
}
/*@-globstate@*/
void
rpmFreeMacros(MacroContext mc)
{
if (mc == NULL) mc = rpmGlobalMacroContext;
if (mc->macroTable != NULL) {
int i;
for (i = 0; i < mc->firstFree; i++) {
MacroEntry me;
while ((me = mc->macroTable[i]) != NULL) {
/* XXX cast to workaround const */
/*@-onlytrans@*/
if ((mc->macroTable[i] = me->prev) == NULL)
me->name = _free(me->name);
/*@=onlytrans@*/
me->opts = _free(me->opts);
me->body = _free(me->body);
me = _free(me);
}
}
mc->macroTable = _free(mc->macroTable);
}
memset(mc, 0, sizeof(*mc));
}
/*@=globstate@*/
/* =============================================================== */
int isCompressed(const char * file, rpmCompressedMagic * compressed)
{
FD_t fd;
ssize_t nb;
int rc = -1;
unsigned char magic[4];
*compressed = COMPRESSED_NOT;
fd = Fopen(file, "r.ufdio");
if (fd == NULL || Ferror(fd)) {
/* XXX Fstrerror */
rpmError(RPMERR_BADSPEC, _("File %s: %s\n"), file, Fstrerror(fd));
if (fd) (void) Fclose(fd);
return 1;
}
nb = Fread(magic, sizeof(magic[0]), sizeof(magic), fd);
if (nb < 0) {
rpmError(RPMERR_BADSPEC, _("File %s: %s\n"), file, Fstrerror(fd));
rc = 1;
} else if (nb < sizeof(magic)) {
rpmError(RPMERR_BADSPEC, _("File %s is smaller than %u bytes\n"),
file, (unsigned)sizeof(magic));
rc = 0;
}
(void) Fclose(fd);
if (rc >= 0)
return rc;
rc = 0;
if ((magic[0] == 'B') && (magic[1] == 'Z')) {
*compressed = COMPRESSED_BZIP2;
} else if ((magic[0] == 0120) && (magic[1] == 0113) &&
(magic[2] == 0003) && (magic[3] == 0004)) { /* pkzip */
*compressed = COMPRESSED_ZIP;
} else if (((magic[0] == 0037) && (magic[1] == 0213)) || /* gzip */
((magic[0] == 0037) && (magic[1] == 0236)) || /* old gzip */
((magic[0] == 0037) && (magic[1] == 0036)) || /* pack */
((magic[0] == 0037) && (magic[1] == 0240)) || /* SCO lzh */
((magic[0] == 0037) && (magic[1] == 0235)) /* compress */
) {
*compressed = COMPRESSED_OTHER;
}
return rc;
}
/* =============================================================== */
/*@-modfilesys@*/
char *
rpmExpand(const char *arg, ...)
{
char buf[BUFSIZ], *p, *pe;
const char *s;
va_list ap;
if (arg == NULL)
return xstrdup("");
buf[0] = '\0';
p = buf;
pe = stpcpy(p, arg);
va_start(ap, arg);
while ((s = va_arg(ap, const char *)) != NULL)
pe = stpcpy(pe, s);
va_end(ap);
(void) expandMacros(NULL, NULL, buf, sizeof(buf));
return xstrdup(buf);
}
/*@=modfilesys@*/
int
rpmExpandNumeric(const char *arg)
{
const char *val;
int rc;
if (arg == NULL)
return 0;
val = rpmExpand(arg, NULL);
if (!(val && *val != '%'))
rc = 0;
else if (*val == 'Y' || *val == 'y')
rc = 1;
else if (*val == 'N' || *val == 'n')
rc = 0;
else {
char *end;
rc = strtol(val, &end, 0);
if (!(end && *end == '\0'))
rc = 0;
}
val = _free(val);
return rc;
}
/* @todo "../sbin/./../bin/" not correct. */
char *rpmCleanPath(char * path)
{
const char *s;
char *se, *t, *te;
int begin = 1;
if (path == NULL)
return NULL;
/*fprintf(stderr, "*** RCP %s ->\n", path); */
s = t = te = path;
while (*s != '\0') {
/*fprintf(stderr, "*** got \"%.*s\"\trest \"%s\"\n", (t-path), path, s); */
switch(*s) {
case ':': /* handle url's */
if (s[1] == '/' && s[2] == '/') {
*t++ = *s++;
*t++ = *s++;
/*@switchbreak@*/ break;
}
begin=1;
/*@switchbreak@*/ break;
case '/':
/* Move parent dir forward */
for (se = te + 1; se < t && *se != '/'; se++)
{};
if (se < t && *se == '/') {
te = se;
/*fprintf(stderr, "*** next pdir \"%.*s\"\n", (te-path), path); */
}
while (s[1] == '/')
s++;
while (t > path && t[-1] == '/')
t--;
/*@switchbreak@*/ break;
case '.':
/* Leading .. is special */
/* Check that it is ../, so that we don't interpret */
/* ..?(i.e. "...") or ..* (i.e. "..bogus") as "..". */
/* in the case of "...", this ends up being processed*/
/* as "../.", and the last '.' is stripped. This */
/* would not be correct processing. */
if (begin && s[1] == '.' && (s[2] == '/' || s[2] == '\0')) {
/*fprintf(stderr, " leading \"..\"\n"); */
*t++ = *s++;
/*@switchbreak@*/ break;
}
/* Single . is special */
if (begin && s[1] == '\0') {
/*@switchbreak@*/ break;
}
/* Trim embedded ./ , trailing /. */
if ((t[-1] == '/' && s[1] == '\0') || (t != path && s[1] == '/')) {
s++;
continue;
}
/* Trim embedded /../ and trailing /.. */
if (!begin && t > path && t[-1] == '/' && s[1] == '.' && (s[2] == '/' || s[2] == '\0')) {
t = te;
/* Move parent dir forward */
if (te > path)
for (--te; te > path && *te != '/'; te--)
{};
/*fprintf(stderr, "*** prev pdir \"%.*s\"\n", (te-path), path); */
s++;
s++;
continue;
}
/*@switchbreak@*/ break;
default:
begin = 0;
/*@switchbreak@*/ break;
}
*t++ = *s++;
}
/* Trim trailing / (but leave single / alone) */
if (t > &path[1] && t[-1] == '/')
t--;
*t = '\0';
/*fprintf(stderr, "\t%s\n", path); */
/*@-temptrans -retalias@*/ return path; /*@=temptrans =retalias@*/
}
/* Return concatenated and expanded canonical path. */
const char *
rpmGetPath(const char *path, ...)
{
char buf[BUFSIZ];
const char * s;
char * t, * te;
va_list ap;
if (path == NULL)
return xstrdup("");
buf[0] = '\0';
t = buf;
te = stpcpy(t, path);
*te = '\0';
va_start(ap, path);
while ((s = va_arg(ap, const char *)) != NULL) {
te = stpcpy(te, s);
*te = '\0';
}
va_end(ap);
/*@-modfilesys@*/
(void) expandMacros(NULL, NULL, buf, sizeof(buf));
/*@=modfilesys@*/
(void) rpmCleanPath(buf);
return xstrdup(buf); /* XXX xstrdup has side effects. */
}
/* Merge 3 args into path, any or all of which may be a url. */
const char * rpmGenPath(const char * urlroot, const char * urlmdir,
const char *urlfile)
{
/*@owned@*/ const char * xroot = rpmGetPath(urlroot, NULL);
/*@dependent@*/ const char * root = xroot;
/*@owned@*/ const char * xmdir = rpmGetPath(urlmdir, NULL);
/*@dependent@*/ const char * mdir = xmdir;
/*@owned@*/ const char * xfile = rpmGetPath(urlfile, NULL);
/*@dependent@*/ const char * file = xfile;
const char * result;
const char * url = NULL;
int nurl = 0;
int ut;
#if 0
if (_debug) fprintf(stderr, "*** RGP xroot %s xmdir %s xfile %s\n", xroot, xmdir, xfile);
#endif
ut = urlPath(xroot, &root);
if (url == NULL && ut > URL_IS_DASH) {
url = xroot;
nurl = root - xroot;
#if 0
if (_debug) fprintf(stderr, "*** RGP ut %d root %s nurl %d\n", ut, root, nurl);
#endif
}
if (root == NULL || *root == '\0') root = "/";
ut = urlPath(xmdir, &mdir);
if (url == NULL && ut > URL_IS_DASH) {
url = xmdir;
nurl = mdir - xmdir;
#if 0
if (_debug) fprintf(stderr, "*** RGP ut %d mdir %s nurl %d\n", ut, mdir, nurl);
#endif
}
if (mdir == NULL || *mdir == '\0') mdir = "/";
ut = urlPath(xfile, &file);
if (url == NULL && ut > URL_IS_DASH) {
url = xfile;
nurl = file - xfile;
#if 0
if (_debug) fprintf(stderr, "*** RGP ut %d file %s nurl %d\n", ut, file, nurl);
#endif
}
/*@-branchstate@*/
if (url && nurl > 0) {
char *t = strncpy(alloca(nurl+1), url, nurl);
t[nurl] = '\0';
url = t;
} else
url = "";
/*@=branchstate@*/
result = rpmGetPath(url, root, "/", mdir, "/", file, NULL);
xroot = _free(xroot);
xmdir = _free(xmdir);
xfile = _free(xfile);
#if 0
if (_debug) fprintf(stderr, "*** RGP result %s\n", result);
#endif
return result;
}
/* =============================================================== */
#if defined(DEBUG_MACROS)
#if defined(EVAL_MACROS)
char *macrofiles = "/usr/lib/rpm/macros:/etc/rpm/macros:~/.rpmmacros";
int
main(int argc, char *argv[])
{
int c;
int errflg = 0;
extern char *optarg;
extern int optind;
while ((c = getopt(argc, argv, "f:")) != EOF ) {
switch (c) {
case 'f':
macrofiles = optarg;
break;
case '?':
default:
errflg++;
break;
}
}
if (errflg || optind >= argc) {
fprintf(stderr, "Usage: %s [-f macropath ] macro ...\n", argv[0]);
exit(1);
}
rpmInitMacros(NULL, macrofiles);
for ( ; optind < argc; optind++) {
const char *val;
val = rpmGetPath(argv[optind], NULL);
if (val) {
fprintf(stdout, "%s:\t%s\n", argv[optind], val);
val = _free(val);
}
}
rpmFreeMacros(NULL);
return 0;
}
#else /* !EVAL_MACROS */
char *macrofiles = "../macros:./testmacros";
char *testfile = "./test";
int
main(int argc, char *argv[])
{
char buf[BUFSIZ];
FILE *fp;
int x;
rpmInitMacros(NULL, macrofiles);
rpmDumpMacroTable(NULL, NULL);
if ((fp = fopen(testfile, "r")) != NULL) {
while(rdcl(buf, sizeof(buf), fp, 1)) {
x = expandMacros(NULL, NULL, buf, sizeof(buf));
fprintf(stderr, "%d->%s\n", x, buf);
memset(buf, 0, sizeof(buf));
}
fclose(fp);
}
while(rdcl(buf, sizeof(buf), stdin, 1)) {
x = expandMacros(NULL, NULL, buf, sizeof(buf));
fprintf(stderr, "%d->%s\n <-\n", x, buf);
memset(buf, 0, sizeof(buf));
}
rpmFreeMacros(NULL);
return 0;
}
#endif /* EVAL_MACROS */
#endif /* DEBUG_MACROS */