// File: /workspace/github_cpp_makefile_star2_O2/karel-brinda[P]ococo/ext/htslib/knetfile.c
// Function: khttp_connect_file
int khttp_connect_file(knetFile *fp)
{
	int ret, l = 0;
	char *buf, *p;
	if (fp->fd != -1) netclose(fp->fd);
	fp->fd = socket_connect(fp->host, fp->port);
	buf = (char*)calloc(0x10000, 1); // FIXME: I am lazy... But in principle, 64KB should be large enough.
	l += sprintf(buf + l, "GET %s HTTP/1.0\r\nHost: %s\r\n", fp->path, fp->http_host);
	if (fp->offset != 0) l += sprintf(buf + l, "Range: bytes=%lld-\r\n", (long long)fp->offset);
	l += sprintf(buf + l, "\r\n");
	if ( netwrite(fp->fd, buf, l) != l ) { free(buf); return -1; }
	l = 0;
	while (netread(fp->fd, buf + l, 1)) { // read HTTP header; FIXME: bad efficiency
		if (buf[l] == '\n' && l >= 3)
			if (strncmp(buf + l - 3, "\r\n\r\n", 4) == 0) break;
		++l;
	}
	buf[l] = 0;
	if (l < 14) { // prematured header
		free(buf);
		netclose(fp->fd);
		fp->fd = -1;
		return -1;
	}
	ret = strtol(buf + 8, &p, 0); // HTTP return code
	if (ret == 200 && fp->offset>0) { // 200 (complete result); then skip beginning of the file
		off_t rest = fp->offset;
		while (rest) {
			off_t l = rest < 0x10000? rest : 0x10000;
			rest -= my_netread(fp->fd, buf, l);
		}
	} else if (ret != 206 && ret != 200) {
		// failed to open file
		free(buf);
		netclose(fp->fd);
		switch (ret) {
		case 401: errno = EPERM; break;
		case 403: errno = EACCES; break;
		case 404: errno = ENOENT; break;
		case 407: errno = EPERM; break;
		case 408: errno = ETIMEDOUT; break;
		case 410: errno = ENOENT; break;
		case 503: errno = EAGAIN; break;
		case 504: errno = ETIMEDOUT; break;
		default:  errno = (ret >= 400 && ret < 500)? EINVAL : EIO; break;
		}
		fp->fd = -1;
		return -1;
	}
	free(buf);
	fp->is_ready = 1;
	return 0;
}

// Assembly:
pushq %rbp
pushq %r15
pushq %r14
pushq %r13
pushq %r12
pushq %rbx
pushq %rax
movq %rdi, %rbx
movl 0x4(%rdi), %edi
cmpl $-0x1, %edi
je 0x3fda0
callq 0x4a40
movq 0x10(%rbx), %rdi
movq 0x18(%rbx), %rsi
callq 0x3f623
movl %eax, 0x4(%rbx)
pushq $0x1
popq %rsi
movl $0x10000, %edi          # imm = 0x10000
callq 0x4370
movq %rax, %r14
movq 0x70(%rbx), %rdx
movq 0x78(%rbx), %rcx
leaq 0x7bc5(%rip), %rsi      # 0x47994
movq %rax, %rdi
xorl %eax, %eax
callq 0x4100
movl %eax, %ebp
movq 0x8(%rbx), %rdx
testq %rdx, %rdx
je 0x3fdfa
movslq %ebp, %rdi
addq %r14, %rdi
leaq 0x7bbf(%rip), %rsi      # 0x479b0
xorl %eax, %eax
callq 0x4100
addl %eax, %ebp
movslq %ebp, %rax
movb $0x0, 0x2(%r14,%rax)
movw $0xa0d, (%r14,%rax)     # imm = 0xA0D
addl $0x2, %eax
movl 0x4(%rbx), %edi
movslq %eax, %r15
movq %r14, %rsi
movq %r15, %rdx
callq 0x41d0
cmpq %r15, %rax
jne 0x3fe71
xorl %r12d, %r12d
pushq $0x1
popq %r15
pushq $0x4
popq %r13
movl 0x4(%rbx), %edi
leaq (%r14,%r12), %rbp
movq %rbp, %rsi
movq %r15, %rdx
callq 0x4780
testq %rax, %rax
je 0x3fe7e
cmpq $0x3, %r12
jb 0x3fe6c
cmpb $0xa, (%rbp)
jne 0x3fe6c
leaq (%r14,%r12), %rdi
addq $-0x3, %rdi
leaq 0x7b65(%rip), %rsi      # 0x479c5
movq %r13, %rdx
callq 0x4280
testl %eax, %eax
je 0x3fe7e
incq %r12
jmp 0x3fe2e
movq %r14, %rdi
callq 0x4600
jmp 0x3ff79
movb $0x0, (%r14,%r12)
cmpq $0xd, %r12
ja 0x3fe9e
movq %r14, %rdi
callq 0x4600
movl 0x4(%rbx), %edi
callq 0x4a40
jmp 0x3ff75
movq %r14, %rdi
addq $0x8, %rdi
movq %rsp, %rsi
xorl %ebp, %ebp
xorl %edx, %edx
callq 0x4760
movq %rax, %r15
cmpl $0xce, %r15d
je 0x3fef6
cmpl $0xc8, %r15d
jne 0x3ff07
movq 0x8(%rbx), %r15
testq %r15, %r15
jle 0x3fef6
movl $0x10000, %r12d         # imm = 0x10000
testq %r15, %r15
je 0x3fef6
cmpq %r12, %r15
movl $0x10000, %edx          # imm = 0x10000
cmovlq %r15, %rdx
movl 0x4(%rbx), %edi
movq %r14, %rsi
callq 0x3ff8d
subq %rax, %r15
jmp 0x3fed5
movq %r14, %rdi
callq 0x4600
movl $0x1, 0x40(%rbx)
jmp 0x3ff7c
movq %r14, %rdi
callq 0x4600
movl 0x4(%rbx), %edi
callq 0x4a40
leal -0x191(%r15), %eax
cmpl $0x9, %eax
ja 0x3ff37
leaq 0x79ba(%rip), %rcx      # 0x478e4
movslq (%rcx,%rax,4), %rax
addq %rcx, %rax
jmpq *%rax
pushq $0x1
jmp 0x3ff6d
cmpl $0x1f7, %r15d           # imm = 0x1F7
je 0x3ff6b
cmpl $0x1f8, %r15d           # imm = 0x1F8
jne 0x3ff51
pushq $0x6e
jmp 0x3ff6d
pushq $0x2
jmp 0x3ff6d
addl $0xfffffe70, %r15d      # imm = 0xFFFFFE70
cmpl $0x64, %r15d
pushq $0x16
popq %rax
pushq $0x5
popq %rbp
cmovbl %eax, %ebp
jmp 0x3ff6e
pushq $0xd
jmp 0x3ff6d
pushq $0xb
popq %rbp
callq 0x4060
movl %ebp, (%rax)
orl $-0x1, 0x4(%rbx)
pushq $-0x1
popq %rbp
movl %ebp, %eax
addq $0x8, %rsp
popq %rbx
popq %r12
popq %r13
popq %r14
popq %r15
popq %rbp
retq