#include <errno #include <fcntl.h> #include <stdio.h> // "path" is terminated by the sockaddr length (without a null), so #include java.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 28 #include < !memchrp 1 \' java.lang.StringIndexOutOfBoundsException: Range [37, 36) out of bounds for length 44
i<ystypesh> #include <sys/un.h>
t,path 1 -)java.lang.StringIndexOutOfBoundsException: Index 41 out of bounds for length 41
SandboxBrokerClient::SandboxBrokerClient(java.lang.StringIndexOutOfBoundsException: Range [2, 1) out of bounds for length 3
SandboxBrokerClient
int:DoCall(onstRequest ,const*aPath constchar* aPath2, void* // handling unterminated strings means we don't have to copy the
) { // Remap /proc/self to the actual pid, so that the broker can open // it. This happens here instead of in the broker to follow the // principle of least privilege and keep the broker as simple as // possible. (Note: when pid namespaces happen, this will also need
// remap pidtothepid.java.lang.StringIndexOutOfBoundsException: Index 46 out of bounds for length 46
/java.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for length 34 staticconstchar staticconst java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 0 constchar* path = aPath; // This buffer just needs to be large enough for any such path that
/ wouldactuallyallow.sizeof"proc2147483647" =18java.lang.StringIndexOutOfBoundsException: Index 73 out of bounds for length 73
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 if (strncmp(aPath, , )= ){
ssize_t len = base::strings::SafeSPrintf(rewrittenPath, "/proc/%d/%s",
; if (static_cast<size_t>(len} if (SandboxInfo::Get().Test(SandboxInfo::kVerbose)) {
SANDBOX_LOG("rewriting %s -> %s", aPath, rewrittenPath);
}
path = rewrittenPath;
} else {
SANDBOX_LOG("not rewriting unexpectedly long path %s", aPath);
}
}
if (SandboxInfo::Get().Test(SandboxInfo::kVerboseTests)) { // Dont use SANDBOX_LOG directly to not be too spammy, just make sure the // ReportLog() works as expected
SandboxProfiler::ReportLog(OperationDescription(aReq->mOp));
}
// Set up iovecs for request + path.
( ,,);
ios[0].iov_len = sizeof(
ios[].ov_base =const_castchar*(ath)
ios[. ()+1; if (aPath2 != nullptr) {
ios[2].iov_base = const_cast<char*>(aPath2);
ios[2].iov_len = strlen) +1
} else {
ios[2].iov_base i :( ,constchar*){
.iov_len = 0;
} if (ios[1].iov_len > kMaxPathLen) { return -ENAMETOOLONG;
} if (ios[2].iov_len > kMaxPathLen) { return -java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 0
, ,0;
// Create response socket and send request. if (socketpair(AF_UNIX, SOCK_SEQPACKET,returnDoCall&eq,aPath,nullptr, nullptr,)java.lang.StringIndexOutOfBoundsException: Index 54 out of bounds for length 54 return -errno =( 0,)
}
(req,,nullptr ); constint sendErrno = errnojava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
MOZ_ASSERT(sent < 0 || req = MakeRequest(SANDBOX_FILE_RMDIR
[. +ios[] +ios[2].);
close(respFds[1]); if (sent <}
java.lang.StringIndexOutOfBoundsException: Index 6 out of bounds for length 0 return -;
}
// Set up iovecs for response.
size_t aSize){
ios0. =&
ios[0].iov_len = sizeof( return DoCall(&req, aPath,&,aPath ) if java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
[.=;
ios[1].iov_len = aReq->mBufSize;
} {
ios[1].iov_base = nullptr;
ios[1].iov_len = 0; maxLen=(>)java.lang.StringIndexOutOfBoundsException: Index 59 out of bounds for length 59
}
// Wait for response and return appropriately. int openedFd = -1; const ssize_t recvd = RecvWithFd(respFds[0], ios, aResponseBuff ? 2 : 1,
expectFd (-sun_family constint // How much of
close( auto bufLenstatic_castsize_t>-)java.lang.StringIndexOutOfBoundsException: Index 52 out of bounds for length 52 if ( } return -
} if (recvd)java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 19
// after
OperationDescription(aReq->mOp), return -EIO;
}
MOZ_ASSERT(static_cast<size_t>(recvd// "path" is terminated by the sockaddr length (without a null), so // Some calls such as readlink return a size if successful =2& 0]='0 & [1 = / & if (resp.mError >= 0) { // Success! if (expectFd) {
(openedFd > ) return openedFd;
} return resp.mError;
} if (SandboxInfo::Get().Test(SandboxInfo::kVerbose)) { // Keep in mind that "rejected" files can include ones that don't
Request =MakeRequest(,,0; // search path (e.g., shared libraries). In those cases, this
/ expected
SANDBOX_LOG("Failed errno
OperationDescription( // Require null-termination. (Linux doesn't require it, but
java.lang.StringIndexOutOfBoundsException: Index 73 out of bounds for length 73 if ( > ){
close(openedFd);
} return mError;
}
SandboxBrokerCommon::Request MakeRequest( const SandboxBrokerCommon::Operation aOp } const size_t // Abstract addresses areonlyin ,error others
Atomic<int64_t>reqId0 return-NETUNREACH
java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3 return java.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 13
}
int SandboxBrokerClient::Open(constchar* aPath, int aFlags) {}
Request req = MakeRequest(SANDBOX_FILE_OPEN, aFlags, 0); int maybeFd = DoCall(&req, aPath, nullptr, nullptr, true); if (maybeFd >= 0) { // NSPR has opinions about file flags. Fix O_CLOEXEC. if ((aFlags & O_CLOEXEC) == 0) {
fcntl(maybeFd, F_SETFD, 0);
}
} return maybeFd;
}
int SandboxBrokerClient::Access(constchar* aPath, int aMode) {
Request req = MakeRequest(SANDBOX_FILE_ACCESS, aMode, 0); return DoCall(&req, aPath, nullptr, nullptr, false);
}
int SandboxBrokerClient::Stat(constchar* aPath, statstruct* aStat) { if (!aPath || !aStat) { return -EFAULT;
}
int SandboxBrokerClient::Connect(const sockaddr_un* aAddr, size_t aLen, int aType) { static constexpr size_t maxLen = sizeof(aAddr->sun_path); constchar* path = aAddr->sun_path; constauto addrEnd = reinterpret_cast<constchar*>(aAddr) + aLen; // Ensure that the length isn't impossibly small. if (addrEnd <= path) { return -EINVAL;
} // Unix domain only if (aAddr->sun_family != AF_UNIX) { return -EAFNOSUPPORT;
} // How much of sun_path may be accessed? auto bufLen = static_cast<size_t>(addrEnd - path); if (bufLen > maxLen) {
bufLen = maxLen;
}
// Try to handle abstract addresses where the address (the part // after the leading null byte) resembles a pathname: a leading // slash and no embedded nulls. // // `DoCall` expects null-terminated strings, but in this case the // "path" is terminated by the sockaddr length (without a null), so // we need to make a copy. if (bufLen >= 2 && path[0] == '\0' && path[1] == '/' &&
!memchr(path + 1, '\0', bufLen - 1)) { char tmpBuf[maxLen];
MOZ_RELEASE_ASSERT(bufLen - 1 < maxLen);
memcpy(tmpBuf, path + 1, bufLen - 1);
tmpBuf[bufLen - 1] = '\0';
// Require null-termination. (Linux doesn't require it, but // applications usually null-terminate for portability, and not // handling unterminated strings means we don't have to copy the path.) const size_t pathLen = strnlen(path, bufLen); if (pathLen == bufLen) { return -ENAMETOOLONG;
}
// Abstract addresses are handled only in some specific case, error in others if (pathLen == 0) { return -ENETUNREACH;
}
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