Comments (13)
martinorob
commented on May 22, 2024
2
@JohnDDuncanIII may you explain how do you do it? Thanks
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green4984
commented on May 22, 2024
2
struct iphdr not exists on MacOS, use the define code below
#ifdef APPLE
#define iphdr ip
#endif
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qq42
commented on May 22, 2024
1
@martinorob An alternative ICMP tunnel implementation with a working OS X client is Hans:
http://code.gerade.org/hans/
https://github.com/friedrich/hans
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DhavalKapil
commented on May 22, 2024
The issue is probably with some header file. Presently it works fine on linux. Will look into it in some time
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JohnDDuncanIII
commented on May 22, 2024
For what it's worth, I also tried compiling this with gcc47 (sourced from pkg-src and installed on OS X 10.11.2) instead of clang and it still exited with errors
gcc -c -o icmptunnel.o icmptunnel.c -I.
gcc -c -o icmp.o icmp.c -I.
icmp.c:22:47: warning: 'struct icmphdr' declared inside parameter list [enabled by default]
icmp.c:22:47: warning: its scope is only this definition or declaration, which is probably not what you want [enabled by default]
icmp.c:22:47: warning: 'struct iphdr' declared inside parameter list [enabled by default]
icmp.c: In function 'send_icmp_packet':
icmp.c:103:24: error: invalid application of 'sizeof' to incomplete type 'struct iphdr'
icmp.c:103:47: error: invalid application of 'sizeof' to incomplete type 'struct icmphdr'
icmp.c:114:45: error: invalid application of 'sizeof' to incomplete type 'struct iphdr'
icmp.c:115:43: error: invalid application of 'sizeof' to incomplete type 'struct iphdr'
icmp.c:115:66: error: invalid application of 'sizeof' to incomplete type 'struct icmphdr'
icmp.c:117:3: warning: passing argument 1 of 'prepare_headers' from incompatible pointer type [enabled by default]
icmp.c:22:6: note: expected 'struct iphdr *' but argument is of type 'struct iphdr *'
icmp.c:117:3: warning: passing argument 2 of 'prepare_headers' from incompatible pointer type [enabled by default]
icmp.c:22:6: note: expected 'struct icmphdr *' but argument is of type 'struct icmphdr *'
icmp.c:119:5: error: dereferencing pointer to incomplete type
icmp.c:120:5: error: dereferencing pointer to incomplete type
icmp.c:121:5: error: dereferencing pointer to incomplete type
icmp.c:125:7: error: dereferencing pointer to incomplete type
icmp.c:126:7: error: dereferencing pointer to incomplete type
icmp.c:127:7: error: dereferencing pointer to incomplete type
icmp.c:127:60: error: invalid application of 'sizeof' to incomplete type 'struct icmphdr'
icmp.c: In function 'receive_icmp_packet':
icmp.c:165:45: error: invalid application of 'sizeof' to incomplete type 'struct iphdr'
icmp.c:166:43: error: invalid application of 'sizeof' to incomplete type 'struct iphdr'
icmp.c:166:66: error: invalid application of 'sizeof' to incomplete type 'struct icmphdr'
icmp.c:169:26: error: dereferencing pointer to incomplete type
icmp.c:170:26: error: dereferencing pointer to incomplete type
icmp.c:171:30: error: dereferencing pointer to incomplete type
icmp.c:172:55: error: invalid application of 'sizeof' to incomplete type 'struct iphdr'
icmp.c:172:78: error: invalid application of 'sizeof' to incomplete type 'struct icmphdr'
icmp.c: At top level:
icmp.c:220:47: warning: 'struct icmphdr' declared inside parameter list [enabled by default]
icmp.c:220:47: warning: 'struct iphdr' declared inside parameter list [enabled by default]
icmp.c:220:6: error: conflicting types for 'prepare_headers'
icmp.c:22:6: note: previous declaration of 'prepare_headers' was here
icmp.c: In function 'prepare_headers':
icmp.c:222:5: error: dereferencing pointer to incomplete type
icmp.c:223:5: error: dereferencing pointer to incomplete type
icmp.c:224:5: error: dereferencing pointer to incomplete type
icmp.c:225:5: error: dereferencing pointer to incomplete type
icmp.c:226:5: error: dereferencing pointer to incomplete type
icmp.c:227:5: error: dereferencing pointer to incomplete type
icmp.c:228:5: error: dereferencing pointer to incomplete type
icmp.c:230:7: error: dereferencing pointer to incomplete type
icmp.c:231:7: error: dereferencing pointer to incomplete type
icmp.c:232:7: error: dereferencing pointer to incomplete type
icmp.c:233:7: error: dereferencing pointer to incomplete type
make: *** [icmp.o] Error 1
running echo $? reveals that it exited with code 2. gcc version used is version 4.7.4 built and installed yesterday.
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DhavalKapil
commented on May 22, 2024
Perhapsstruct iphdr is defined differently/not defined in OS X. I'll have to define it myself.
I'm still searching for other solutions though.
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dotpot
commented on May 22, 2024
👍
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JohnDDuncanIII
commented on May 22, 2024
Yeah, I tried declaring the structs manually in the icmp.c file [struct iphdr{stuff}; , etc], which fixed the 'incomplete type' issues. I do agree that there is probably a more portable solution to the problem though.
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prologic
commented on May 22, 2024
Any updates on this?
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DhavalKapil
commented on May 22, 2024
Not yet.
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BruceLEO1969
commented on May 22, 2024
Got the same issues
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BirkhoffLee
commented on May 22, 2024
Same here
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leonardoarroyo
commented on May 22, 2024
I'm having the same.
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Related Issues (20)
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